Solve tactics daily using a systematic calculation technique,play rapid or classical and analyse that game in depth. Study basic king pawn and rook endings.
Tactics

Improving Your Chess - Resources for Beginners and Beyond...
https://www.chess.com/blog/RussBell/improving-your-chess-resources-for-beginners-and-beyond

https://support.chess.com/article/437-how-do-i-get-better-at-chess
Good luck,
Maybe try some lessons and puzzles etc
I practice tactics on lichess, and i am about 1500. What rating should I aim for to improve? How can I get better?
Aim for incremental improvements over time. Do not be too over-ambitious in setting a goal! For example, an initial target of improving to 1600 in two months is more realistic than a target of 2500 in two months.
I practice tactics on lichess, and i am about 1500. What rating should I aim for to improve? How can I get better?