"Memorizing 100 lines of theory" is a terrible way to improve unless you're very near the top. Even at my level, people will hang pieces occasionally (not quite as often as some folks would like you to believe, but still) and as long as you can memorize enough of one or two openings that don't suck, you're good.
Most people will tell you about opening principles, though. Indeed, they are the rules you should generally go by when starting the game.
As for reviewing, what I usually do is look at the game without game review enabled and search for the moment(s) where the evaluation bar did a noticeable swing (meaning the move was a mistake). Remember, not all mistakes are hanging pieces or mate. Sometimes it's giving your opponent the opportunity to put a knight in a very problematic place, or opening your king to potential harassment that might not lead to checkmate, but could still lead to other problems.
One important thing to do during the game is to think before you move. Consider the moves your opponent is most likely to do in response to your move (even if they're blunders) and prepare accordingly, but always be prepared for something unexpected. This will also help you to not put your pieces where your opponent can just make them vanish for free and allow you to see what your opponent is trying to do so you can react accordingly. If you struggle with this, try a longer time control or use an increment (bonus time for each move played).
On a different note, I don't know why people say you should "play more." In my opinion, that's kind of silly. If you're frustrated and playing badly because of your frustration, the best thing to do is stop. Come back when you're not frustrated anymore and start hammering away again.
Hey guys,
I joined chess.com a day ago and I’ve been playing non-stop. I’ve watched the tutorials, tried the puzzles, messed with openings… and still, I keep blundering pieces like I’m doing it on purpose. It’s annoying because I know I’m not terrible, I see the ideas after I lose, but never in the moment.
I’m trying to figure out how people actually climb ELO without burning out or memorizing 100 lines of theory. Everyone says “just play more” or “analyze your games,” but that doesn’t help much when you don’t even know what you’re looking for in your analysis.
So yeah, I’m curious: what actually worked for you? Like, what was the turning point where chess started to click? Was it a mindset thing? Studying endgames? Losing a hundred games in a row until something snapped?
I would love to know,