Oh,i’ve got the same problem,i’ll wait for someone to post...
How to reach 1500 elo?

Learn a decent opening that you can stick with (something more mainline i.e. Queen's Gambit, Caro Kahn, English Opening, etc.) and get comfortable with it. Other than that, practice tactics with puzzles and analyze your games. This is going to vary a lot depending on the player so the best way to find weaknesses is to analyze many of your own games and find the weak point. Likely, you are not as well-rounded as you may think, with some skills being above and below your current rating. Work to improve the weak points. If anyone wants me to look at their games I would be happy to, just send me a message and I'll try to get back to you.
And of course, just play the game, the more you play, the better.
Hello, i want to ask how to reach 1500 elo and on what things to foucs on the most ?