I usually catch them right after I make the move. Then I'm sitting there kicking myself for making it
Yeah, it's a weird right? And really common -- making a move and immediately realizing it's bad.
The typical advice is things like "sit on your hands."
But I like to think about why it happens and why it's so common. I think it happens because it's a very normal habit to try to find out why a move might be good. The easiest example is if we notice a move is checkmate, then we immediately win the game. So discovering why a move is good (wins a queen, wins a rook, etc) has powerful positive feedback.
As players gain experience, they add trying to find out why a move is bad. When you try to find out why your move is bad, you safeguard yourself against immediately losing... and I think the clarity comes so quickly, because after you make a move, now it's your opponent's turn, so you immediately start thinking about what they can do... and if they can instantly win with a capture, well, you tend to immediately notice because checks and captures are the most obvious moves.
So the long term answer is, try to find the worst aspects of your move by finding all the checks, captures, and threats your opponent can play as a response. I call it "long term" because it essentially doubles the work you have to do on every move. Not only are you looking for reasons to like your move, but now you're also looking for reasons to dislike it. That's why it typically takes players a year or more to develop this habit (and some never develop it).
The short term answer is, try to mimic that moment of relaxation, where you've just made your move and you don't need to calculate anything anymore. Shut your eyes, take a breath, clear your mind, something like this, and (imagining your candidate move as if it's been made) look at the position as if it were your opponent to move. Does anything jump out at you? If you can trigger this moment of clarity before you move, then you wont have to suffer it happening afterwards
It's the easiest thing and I can recognize the exact blunders I make when I play. I'm struggling to break past the 600s but I can't with all these stupid blunders I'm making. Thankfully, I can usually get my win back and at least hold around 630, but if I keep blundering, I'll be lucky to see 650 letalone 700.
I can see the blunders with every analysis, heck even before analysis, I usually catch them right after I make the move. Then I'm sitting there kicking myself for making it and on occasion I can recover, but usually once the move is made, the game is pretty much lost for me. I have tried taking time before making my moves and even then I'll still swear I see a pretty good move from my position, play it, then boom realize just at that moment that I just blundered like how?
I appreciate all those who have been helping me and telling me I will see 1000 soon and I play really well usually. You guys rock, and through analyzing every one of my games after and seeing how other 200-600 level players play, I can see where I'm definitely playing at a good level, it's just the small stupid blunders that I pull out of my tush for some reason.
I've been doing puzzles regularly to help my board vision and tactics, I've been pausing when I tilt, and I've been trying to take more time between moves (although maybe not enough). Any advice on how I can actually just stop blundering. Not looking for tips or blog posts about general tactics or principles. I mean just the blundering.