How to get back 300 points?

Dropped from 1900 to 1600. How to get back up?

In what? It doesn't look like you dropped 300 points in any of the time controls.

I guess in blitz, you had a 1900 rating briefly back in mid-2023.... Is that what you mean?

In Blitz and Bullet about 300 points from my peak.

You did peak above 1900 back in 2023 but the long term graph of your rating is fairly flat.

It looks like you played 2500 games in 2023 and only 291 last year.

You are bound to lose rating when you don't play often.

Did ratings change since 2023 on chess.com? It feels like opponents with low ratings are much stronger since then.

I am unaware of any change in the ratings system or adjustments made to it that could explain the decline in your rating.

I haven't seen any random change in rating, I assume it's just because you got weaker? like tough truth but like #5 yeah you are bound to lose if you don't play often.