Help, how do you train against simplest blunders?

I am blundering away many rapid games, even without time pressure, even in won positions. Like this


My last move just blundered a piece and the game. Of course I know that I should not blunder and that I should do a blunder check for every move.
Usually, I do this blunder check - otherwise my rating would be much lower. I do it mostly unconsciously, I assume.

What can I do to *train* against these simplest blunders? Normal puzzles don't help. Maybe they even hurt. Why? In normal puzzles you need to find the one best move. To not make simple blunders, you just need to avoid all terrible moves. This is something completely different.

Please mention any ideas you have.

I have the very same problem. I know very well that avoiding blunders would help me improve my results but i can't seem to find a strategy to incorporate it reliably into my thinking at the board. If anyone knows methods to improve the habits at the board, i am all ears!

Looks like played blindfold :)
You must look at the board!

The best way to stop blundering is to improve your game generally. After lots of practice such oversights should be greatly reduced (although they will never disappear entirely--unfortunately).

We sometimes used to " Sit on our hands" Literally' as it takes longer to make your move phyiscaly but that's when u are ok on time ... You would "catch" yourself before touching a piece . I think playing more steady being polished 7 not easily frustrated or "flustered" sometimes 'helps" make your opponent blunder more than you an OUTWARD CALM INNER also a bit' but stay ALERT ! @Alakaluf Maybe also you are better at positional Chess Than you think & just include too many UNCLEAR SCRAPPY Positions to OCCUR where you have less control than u like . Or for example also you might NOT be good at ENDINGS & so to avoid them you play UNSOUNDLY , You must become more "Polished" a fighter more all around to gain confidence but not too much confidence !! Otherwise u blunder OMG stay calm or as Pink Floyd said in Animals youv'e got to pick out the meat with your eyes closed I'm Rambling but yes also follow what @MrPushwood said just get better & i add relax @Alakaluf

Sheesh.

I am around your level too and I think that these blunders happen. Yes, everyone has bad days in chess. When this happens to me I am very frustrated too. Especially against better players. But I think that you shouldn't think too much about these moves and like @MrPushwood said just improve your overall games and these blunders will slowly decrease.

You are definitely much more capable than this. Yes? You are much better than this. Why not choose to kick some ass? You just need to smack your bitch up.... then everything will be alright.

Don‘t worry even IM playing for the win of a tournament can blunder a mate in a position that was otherwise won (chess24.com/de/watch/live-tournaments/rilton-cup-2022/8/1/1) - besides your level is already so high, I feel unqualified to give any tips, but whenever such a blunder occurs it’s like a glitch in the board visualization like forgetting an opponents piece guarding the field my piece trips on.
But I don’t know if that accuracy can be trained or is rather directly linked to focus and concentration in that moment.

To make it clearer. It is not only now and then when I do blunder away games. From my last 18 lost rapid games (some on other platforms) I blundered away 14! Not complicated tactics. Not positionally outplayed. Simplest tactics.

I am not content with this state of affairs.
This is obviouosly my single biggest problem. And getting better means to overcome or at least reduce this big problem.

The only ideas how to overcome this problem mentioned above are
* just become generally better
* become calmer

These may be of value, but I am still looking for some thing/method/website/app/process/exercise that addresses my problem more directly.
Any more ideas? Please!

my feeling is that playing short time controls doesn't allow enough time to practice your habits until they become rote. There is too little time. So my plan is to play longer time controls until I reduce my blunder rate and then return to shorter time controls.

I do feel i've become more calm when time pressure mounts. A bit of grace under pressure, but ofcourse the chance of a blunder does increase, so the other thing is learning to manage my time better so time pressure doesn't cause me to lose by blundering too much.

p.s. NM Thunderclap, i appreciated the Pink Floyd lyric. Does make sense.