Can I get some help?

Try to do puzzles every day and play longer time controls eg daily. Blitz can be fun but it's very difficult to improve your play when you haven't got time to evaluate properly.
Good luck.

First of all, make sure you know all the principles, if you lack any principle/basics you can ask me:

First of all, make sure you know all the principles, if you lack any principle/basics you can ask me:
Hey thanks this was pretty useful!

Hi, i'm a beginner in chess and i don't know what to do in the middle of the game. Some advice??
Improve your worst placed piece, keep looking for weaknesses, out-posts, open-files or diagonals

[Event "Javad1361a vs. KittyAnand"] [Site "Chess.com"] [Date "2020-09-14"] [White "Javad1361a"] [Black "KittyAnand"] [Result "0-1"] [WhiteElo "938"] [BlackElo "872"] [TimeControl "standard"] [Termination "KittyAnand won by resignation"]Good game 1. e4 Nf6 2. Qf3 Nc6 3. c3 Ne5 4. Qd1 Nxe4 5. g3 d5 6. Bg2 Bg4 7. Qa4+ c6 8. f3 b5 9. Qc2 Nxg3 10. hxg3 Be6 11. d4 Nc4 12. Na3 g6 13. Nxc4 Bf5 14. Qe2 bxc4 15. g4 Bd3 16. Qf2 Bg7 17. Bf1 O-O 18. Bxd3 cxd3 19. Qe3 Qd6 20. Qxd3 Qg3+ 21. Kd1 Qg2 0-1

[Event "Javad1361a vs. KittyAnand"] [Site "Chess.com"] [Date "2020-09-14"] [White "Javad1361a"] [Black "KittyAnand"] [Result "0-1"] [WhiteElo "938"] [BlackElo "872"] [TimeControl "standard"] [Termination "KittyAnand won by resignation"]Good game 1. e4 Nf6 2. Qf3 Nc6 3. c3 Ne5 4. Qd1 Nxe4 5. g3 d5 6. Bg2 Bg4 7. Qa4+ c6 8. f3 b5 9. Qc2 Nxg3 10. hxg3 Be6 11. d4 Nc4 12. Na3 g6 13. Nxc4 Bf5 14. Qe2 bxc4 15. g4 Bd3 16. Qf2 Bg7 17. Bf1 O-O 18. Bxd3 cxd3 19. Qe3 Qd6 20. Qxd3 Qg3+ 21. Kd1 Qg2 0-1
??
Hello I like to think i'm not to bad, but i'm not sure, if you have any advice please help me