h4 Rh3
Worst chess opening's
The opening moves that can be considered bad or inaccurate (of course a single opening move does not lose immediately) are f3, Na3, Nh3, a3, a4, h3 and h4. Out of these f3 weakens your king, the rest are basically giving the first move to Black or putting your knight to a non-optimal square. Some of these can be seen in blitz as means of getting your opponent out of theory (as none of these moves basically has any). Of course each of these moves can be good a little later.
Then there are c3, d3 and e3, which are not bad, only rather passive for White (mainly playing Caro-Kann, Pirc or French with reversed colors). In general these give solid positions but usually you want a bit more as White. Then there are g4 and b4, which are rarely seen as they are not good but not so bad that if you're used to them, you couldn't play a decent (if often a bit wild) game as your opponent rarely faces them. The rest (e4, d4, c4, Nf3, g3, b3, f4, Nc3) are played at least somewhat frequently and have at least some established theory.
Fool's Mate and Scholar's Mate.
Because they end the game immediately.
Unlike Fool's Mate, Scholar's Mate requires making questionable moves of your own. Because going for an immediate Scholar's Mate requires weak moves I haven't played a four move mate since Junior High until I began playing King of the Hill and found myself with multiple four move mates while playing decent moves of my own.
https://www.chess.com/variants/king-of-the-hill/game/14153511/8/3
Yes, White could have delayed it to move 5 but, unlike Scholar's Mate, it was a forced mate before Black even played the third move.

My team @ChessicalPROdigies beat a really good team with bongcloud, you can check it out if you don't believe me.
1. f3 weakens the king, and does not do anything.
excuse me? 1.f3 leads to barnes hammershlag which completely destroys all those theory noobs

Chess Openings Resources for Beginners and Beyond...
https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond
So we hear often about the best openings to play such a pawn to e4 for beginners and novice's like myself but what are the worst opening moves to avoid for us newbies?