What to do when you plateau?

So I feel like I've hit a plateau when it comes to rating. Does anyone have any advice for how to get over it? And how long should I try to get over this plateau before accepting I've reached my peak?

It depends on the way you train and analyse your games.

Depending on your age it might be some years to see if you have reached your peak.

I looked at your last game vs Haagsebluf, and saw clear positional errors that need to be addressed before you can go much higher than the mid-1600s. In particular, you went to the trouble of fianchetoing your dark squared bishop, then voluntarily moved it to f6 to trade if off on move 7 or 8. Forget the don't move a piece twice in the opening principle, trading that bishop for no good reason is a positional sin as it creates massive dark square weaknesses that can be exploited in your position. I think you either need human guidance or you need to read some books or watch some video/streamers on positional chess.

A plateau is a sign of some weakness you are not aware of.
Analyse your lost games to find out.

Study the basics, there are so many themes or ideas in
Chess, that if u have a regular memory you forget it.
Tasks for a hobby:
1.-Study a giuoco piano game, the whole game by a master
2.-Study a queens gambit game with an isolated queen pawn
3.-Study any game that u like for example, either the dutch defence or the bird.
4.-Pick up a Master and study his games for example Alekhine to get fresh new ideas etc.

@TheBoarShark

If you're an adult then at some point you have to accept plateauing. Several studies have been done which show that if you're an adult and have an established rating it's extremely unlikely that you'll go up or down by more than 200 points i.e., one class division. If you're young (like well under 18) this rule doesn't hold.

I accept the fact that after 30 years away from chess I'm never going back to my 2200 rating from 1982. I'm lucky to be in the 2000s. I just enjoy the game and that should be the reason for anybody to play.

After 20 years you will accept your plateau^^

And after 30 years you'll yearn for it.

Accepting it is the most important thing to do. no matter how strong you are online you will lose about half of your games and win half. so have fun

I did look some of your games and you seem have same problem as I just more severe: You drop pawnd and pieces due to carelesness. You would gain quite bit just eliminating some you piece/pawn losing blunderss.

I did not particularly like the way you handle opening state of the game but I do not like mine either. But I think you could try to eliminate moves that dont do anything. Like one move threats from where you with draw back immediatedly.

By the way, I was peaking last year in March what my national rating DWZ concerns (2188). I haven't played many Elo tournaments recently and the few ones I played were rather bad. So my Elo is lower.