Stuck For Lifetime!

There are countless reasons I'm afraid. But the main one is probably that you're not thinking about the way chess works correctly (has more to do with intuitive processes than you realize). I bet you'll be surprised by just how many different articles have been written by Aiden Rayner (among others) about how our brains don't work as well/predictably as we think they do in processing complex systems (such as chess).

And what to do to improve? Ah, I hope going from 700 to 1000 can't be impossible? But so far, it appears to be so.

https://www.chess.com/clubs/forum/view/chess-tips-and-annotated-games#comment-118650434

I'm not your best choice for advice, maybe, but I looked at a few of your games and my opinion is that you understand basic principles but aren't taking enough time to thoroughly check out the board before you move. That's my biggest problem, too... impatience.

@delcai007 Ah, unfortunately, I have done that already. Thinking more proved tp backfire for me on enough occasions. I have records to think for around a minute on three moves, and choose the worst one, not even considering the right moves etc. I have even forum posts saying my thought process is probably wrong or something. Still no improvement. I even took a break from chess from June to August. There is something fundamentally wrong and I have no clue, only frustration.

Bruh you need to study *not hard*. I am 11, started like 4 months ago and am from 600 to 1000. By chilling with these steps:
1. Study
2. Play
3. Game Review
4. Repeat
5. Lessons and Puzzles


Follow these principles:
Opening:
1. Develop Pieces
2. Control Center
3. Castle King
Middlegame:
(MAIN) Always ask yourself, "Can he put me in check or win a piece?"
4. Have a plan. Every move should have a purpose.
5. Assume your opponent's move is his best move.
6. Ask yourself, "why did he move there?" after each opponent mov
Endgame:
Activating your king, creating and pushing passed pawns, using opposition to control key squares, simplifying the position by trading pieces to promote a pawn, positioning your rooks behind passed pawns, and using zugzwang to force a disadvantageous move from your opponent

Why do I always get these cliché pieces of advice? Basically @ChessNerdyBrain summarized all the things I heard again and again since prehistoric time. And if any of you look at my games, I always try to follow these points. But unfortunately, I don't understand plans, how to have them myself or how to decode opponent's. Ah, all I can is copying. And that definitely doesn't work in chess.

https://www.chess.com/clubs/forum/view/chess-tips-and-annotated-games?page=1#comment-118650434
Read these and make sure to implement them by noticing them in every position and also in puzzles. no. 12 for chess tips is chess plans if I remember correctly