For many people, blitz and bullet will not improve your game and could possibly hurt your improvement. You are going off of your pattern recognition which you establish through playing chess with longer time controls and puzzles. I took a look at some of your rapid games. Even when you are playing with longer time controls and have more time to think, you are blitzing out many of the moves.
So my advice would be to slow down. Take time to calculate, do a blunder check before moving, and be aware of your opponents threats. And review your games afterwards to see where you went wrong and why.
Good luck!
i have been growing in rapid but not that much, i am kinda like stuck at between 500-600 - and i play many rapid games. Well and ofc with blitz and bullet. Give me some tips i could use.