1. e5 is not possible.
which is better 1. e4 or 1. d4?

i meant d4 that was really stupid of me : (. it used to be called which is best e4 or e5 lol i am so stupid.

There is no right answer here. Generally speaking e4 TENDS to lead to more open, tactical games whereas d4 TENDS to lead to more closed positional games. A lot of players (including myself) like to play d4 as it avoids having to meet the Sicilian defense by black (c5) - which is very complex and, in recent years, the most successful defense by Black.
This is not to say d4 is dull - there are still a lot of very exciting openings to explore. I think all the games in this year's world championship began with d4!

Objectively ... I agree much with JOSEFK about the Sicilian Defense effects upon 1.e4 play. Back in the mid 80's it seemed to me there was definate advantage to playing e4 as it was very hard to even find Openings that would not end with at least minor advantage to WT when trying to defense it. The Sicilian has always been a good choice, probably best (tho the Caro "outscored" it, meaning win points plus draw points, briefly during a 70's survey i did. Still Siclian has always had the highest Win percentage vs e4 ... but is also subject to losing more, at the time). But it seems now the Sicilian creates more play options than ever before.
Subjectively, d4 or e4? The one that is BEST for a player is the one that you understand better, and execute better, if your goal is to score as many points as you can. Those are the only two ways for a Chess game to become decisive btw. One player Understands what the other does not and wins on adequately executed superior-knowlege; or ultimately how well one Executes their understanding. Superior execution of lesser understanding can win the game too. And do not think that Comfort in a position does not contribute to good execution, as it almost always does ...in my experience. Discomfort will promote mistakes or blunders. Thus sometimes, if you have no preference it pays to play into whichever the opponent will find less pleasing or has played less well.
On the otherhand, if the goal is to have Fun, perhaps best is to choose the one that is preferred to play. Or if the goal is to learn more, it may do to choose the one that is Least well understood and executed.
Alex Dunne of Chess Life Postal Chess fame once did a very informative bio article about planning of a Chess career; which stated, you have to decide What you play for. Money? Tournament Wins? Rating? Just Fun or mental exercise? etc. That is always going to be a consideration clear to even the point of deciding What Move is Better?

American Champions Bobby Fischer, Steinitz and Morphy all liked 1. e4! I believe it promotes The most rapid development possible. In just 1 move White Occupys the Center with a pawn and releases the Queen and King's Bishop for Development! No other move does as much! If e4 is not played at move 1 it may require preparation to be played, as it isn't supported like the Queen's Pawn.
If you like an Open Game, with Tactical Combinations, then you should play e4!
If on the other hand you like a Quiet Positional Game, with Closed Positions then !.d4 is better suited for you!
For me I like Hand to Hand Combat! Most of my games are over at move 25. I do not care much for subtle positional movements behind Closed Pawn Chains. I would say e4forme!!
I don't know. Take your pick. It doesn't really matter. I don't like 1.e4 because of the fact that the Sicilian generally favors black, and there are just plain too many variations(of course, I could just play the alapin or antisicilian or grand prix attack which is a thorn in the side) but most e4 openings lead to only a minuscule advantage with best play on both sides,and tactical vigilance is critical.
Now let's take 1.d4. Now we are really talking. Any beginner can give you hell if you play 1. e4. but 1. d4, takes both tactics and positional understanding. When I want a short game against beginners, I play 1. d4. I have won, with both colors, in under 24 moves. With 1.d4, your skill really counts. With 1. e4, I don't know..not quite enough. But if you want sharper positions, then 1.e4 is your bet. The Slav and semi slav just take the fun out of it.
Openings are not as simple as milk or tea. It's more like asking what route to take when going somewhere? The bumpy one,or the simpler one? The one with more traffic? Or the carpool lane? Will I speed and get a ticket(fall for a tactical trap, or a book opening?)
This is just my opinion. I have openings in which I have managed to acquire a lot of knowledge. There are also openings which, intuitively, I can play rather well. When I want to win, I play that. When I don't care, I play anything else. See?

"The" is the most popular, but it is probably dependent on personal preference or style. Most People like to make a direct Statement. Others may try to infer something in thier Sentence, e.g. Is it better to put your Right or Left Shoe first?

"The" is the most popular, but it is probably dependent on personal preference or style. Most People like to make a direct Statement. Others may try to infer something in thier Sentence, e.g. Is it better to put your Right or Left Shoe first?
It may be best to put your socks on first . . .
Tho which sock may depend upon your actual position . . .
But it's hypothetical to me; I have never appeared at the board nude before ...
So usually just move a pawn instead . . .
But the idea has merit . . .

I play them both to get a variety of positions and which one I play generally depends on my mood. I wouldn't want to play d4 openings all the time they admitedly start to get boring if I keep on playing it. Also, if there's someone I regularly play with who is about... 100 points lower than me than playing the same first move may lead to a very similar position from recent games. I would switch my move so that he is much less prepared with it. In every way, having a few different openings to play is good, you just have to study more.
BUT, if you want to know which is best, I have the answer:
e4 has a 0.14 advantage
d4 has a 0.18 advantage
and interestingly enough, the move 1.a3 is actually better than 1.g3! I guess it's better to have the bishop undeveloped at first than to fianchetto it. I do think that bishops tend to be slightly better developed another way but it still depends on the position.
there are 2 common opening moves e4 and d4. e4 is more common but some people say d4 is best. so i wanted to know which is better 1. e4 or 1. d4?