How hard is it to get from 300 to 500 in rapid chess rating?

I dropped to 100, then got back up to 300 pretty easily, but 300+players are tougher to beat.
How hard is it to work my way up to 500 for rapid chess?
i would say its not the hardest, but still a challenge altogether. honestly it just takes a lot of practice and puzzles as well as studying theory. im sure you can improve by taking your time to learn more.
300s is tough. i got to 350 earlier now back to 300.
I keep making blunders and silly mistakes. I feel if i take too long to think my moves, i lose on time
You should play longer games, so you do not have to worry about time. When you get better and better, you can play good moves instinctively.
I dropped to 100, then got back up to 300 pretty easily, but 300+players are tougher to beat.
How hard is it to work my way up to 500 for rapid chess?
This is what you need to think before each move: Is this move an absolute blunder?

Extremely difficult, imo. I am having an extreme amount of struggle getting back to over 500
Maybe because of the chess.com ban in north korea?
I can teach you EXACTLY how to think during the game (opening, middlegame and endgame). Your chess understanding will never be the same and you will improve a lot. I charge €35/h (if you can't afford it, we can negotiate the price). If you can’t afford too many lessons, don’t worry. I can teach you a lot in an hour. Here to help if you are interested.
If you want to study by yourself, read ‘Logical Chess’. It is really instructive book. You have it on youtube as well: https://www.youtube.com/watch?v=0eTB7oHeRgM&list=PLUrgfsyInqNa1S4i8DsGJwzx1Uhn2AqlT