I am stuck at 600

I have to reach 850 do you think i can do it ? Please someone help me my coach has given target to reach 850 in rapid on 31st December 😭😭😭😭😭oh my god why am so dumb idk what to do man!!!

Always check your intended move is no blunder before you play it.
Think about your move.
Imagine it played on the board.
Check it is no blunder: does not lose any piece or pawn, does not run into checkmate.
Only then play it.

Thanks

To most of my students, I give this advice (and it's all they need):

The biggest reason people struggle in lower-level chess is because of blunders. They make them in almost every game.

A mistake can instantly put you in a bad position, no matter how well you played earlier: if you had great opening knowledge, great positional skills, great endgame skills, whatever; a single mistake can change everything (you lose a piece or get checkmated).

So, how do you avoid blunders? Follow these two simple steps:

1. After your opponent moves, think if it's dangerous. Ask yourself, “What’s his idea?”
2. Before you make your move, think if it's safe. Ask yourself, “What attacking replies can he play?”

If you feel like getting to levels like 1600, 1800, or 2000 in chess is super hard, let's look at it in a different way. Those players you're facing make blunders in nearly every game they play. Beating them isn't so tough if you stop making big mistakes and start using their slip-ups to your advantage.

Again, it does not require you to become a chess nerd or spend all your time on chess. Just doing this one thing can boost your rating by a few hundred points right away.

Blunders occur in almost every game to about 1400-1500 rating. If you can eliminate them from your game, it'll take you a long way. Beyond this there are things you can do to make your game easier and therefore you're less likely to make bluners.