When I was 1280 in rapid I was 1200 in blitz but now I’m 2045 in rapid and only 1606 in blitz.
Why do I suck at blitz and bullet so much more than Rapid?

This is a good problem to have. Much better to be good at actual chess rather than being a bullet degenerate and unable to play chess as it was meant to be played. I'd suggest trying out an OTB tourney.

The Rapid pool is grossly overrated, usually inflated by 400 or more points, your blitz and bullet rating are closer to your real strength.
Because they don't play rapid as often, strong players of 2000+ in blitz usually don't play rapid, check out the titled players profiles , they only play blitz and bullet online, i recently played some rapid games and won the majority of my games. Once you get to 2000 you get paired with a lot of cheaters, strong players and titled players don't mess with that crap.
have you tried the Gooner Gambit? Gooner Gambit: e6 d5 3.Nc3 Bb4 4.Bd2 dxe4 5.Qg4 Qxd4 6.Nf3
so ur saying black gets the first two moves, a white pawn somehow appears on e4 and u take it, and a pawn appears on d4 and u take it, and then Nf3 and they cant take cuz their queen hangs and ur better even though ur down two pawns or smth??
Brilliant 👏