James, you don't suck.
memorizing theory. please post super long lines in Botvinnik Semi slav, Najdorf, dragon, ruy, here.

James, YOU DON'T SUCK. I have made it to 2270 without studying a single line. I think a good way to move on would be to play a lot of slower rapid games, study endgames, and lots of puzzles. Your ratings will improve, just like your middle game-endgames. The opening is irrelevant until ~2400.
Maybe play some 10/0 with me 😁😁

idc my otb rating is permannently ruined so I'm not going to improve I just want to know as much theory as I can

I have made it to 2270 without studying a single line.
just a complete lie. But maybe we're doing a hyperbole here.

Super-long lines in the Najdorf?
In a country vs country match (Malaysia vs Canada) as Black in the Najdorf I got to play a prepared novelty (my own, I mean) on move 28. So up to White's 28th move it was all known theory.
A Heroic Defense in the Sicilian Najdorf - Kids, don't try this at home! - Chess Forums - Chess.com
Other examples? I used to play the following line in over-the-board CFC-rated tournaments.
^^ I suck and the soluion is more theory.