Improving chess skills up from 2000 ELO and above

Hello everyone.

As a comeback player I wanted to hear your opinion about my situation .

I used to be quite good as a youngster but didn't pursue a career in chess, but however as it is a popular mantra in our game that you'll eventually comeback, so, here I am .

My primar question is.. what should I study now, 25 years later cca my last chess session.

Opening repertoire was mostly d4 as white, Saemich Kings Indian, queen's pawn, closed variations, and c6 as black.. Slav defence and of course, Caro Kann .

I liked to study strategy game, was good positional player, not really keen into learning endgame sadly, and always had a problem to execute position when I stand better.. from +0,8-1,2 let's call it as an example that way.

Since I played couple of tournaments, my current ELO is 2005.. Highest live I believe was 2065, and that is my strenght without systematic work.

All suggestions are welcome, and you can see my games here with weaker oponents until now, since I started with 400 rating.. playing bullet.

Thanks guys in advance!!

Cheers

Hey ChessGT17, Thanks for the honest answer, I really appreciate that and I know what you wanted to say 😉