Since I'm not the highest rated player out there, take everything I say with a grain of salt . However I think you should work on your tactics which I see you have been doing, good start! However, you're only doing like 5 tactics a day. I recommend doing more tactics, perhaps 15 a day. To make it more manageable, I recommend gradually increasing the amount (do 1 the first day, 2 the second, 3 the third, etc.) so it doesn't feel as arduous. I also recommend spending more time thinking when doing tactics. I noticed that in most of the tactics you got wrong, you spent less time on them then the average person who attempted the puzzle. I also recommend doing lessons (perhaps start at "From Beginner to Winner" as those cover fundamental chess ideas. If you do these things and keep playing longer time control games as you have been doing (make sure to take your time on those games!) , I think you will get better soon. Hope this helps!
P.S. Nice username!
i have been playing chess for 4 1/2 months and i still cant even budge 600 rating, i blunder obvious moves or sometimes just throw a piece to the enemy for no reason. i always miss calculate exchanges and end up losing a knight/pawn. what is wrong with me?