The main problem young players have these days, are they don't focus on 1 opening enough. They try and learn every variation of every opening possible, but it isn't possible.
1. Study 1 opening, learn some basic lines of it. When you have a decent understanding of it, start looking for games played by masters of your opening. This'll help you a lot.
2. Don't play too much blitz, trust me, it'll negatively effect you. Play more standard than anything.
3. Study positional chess and tactics, make sure you don't do one more than the other. Keep the balanced, this will make you an all around strong player.
4. Don't get caught up in theory lines of popular openings, just learn the fundamentals of openings.
Good luck.
How do you improve in chess? Should i study more tactics,openings, etc...? idk im always studying openings and finding which ones i should use and im starting to practice tactics more but i think one of my main problems is middlegame/endgame i think. Im not so sure but i will post my last two games i have lost in for you people to take a look also if anyone is willing to play a game with me and tell me what i need to improve i dont mind, just send me an invite :D