whenever I play with lichess experts...

@ya_boy_Agent fine, but I'm saying that the question is far too vague, and the basis of the question is bad. also, in longer time controls, mistakes go down in the opening even if you don't know what you're doing. I know from my experience that just so long as I sink 20 minutes into an opening position, even if I've never seen it before, I can play the best move, or at least an acceptable move. However, if you have 10 seconds to think, if that, no way. good for you, tho, bruv

thanks :p

Why not 35. cxb5 and white wins ?

because it's blitz, and everything that happens in blitz is meaningless. it's just chess with less strategy, and more focus on how fast you can move pieces/how good your internet connection is, etc. No stock should be taken in any blitz game ever played.

@BobbyTactics that was what i was thinking. Take a bishop, trade queens, andyou win 3 points of material.

@Gymhgy , probably he was not paying attention, the queen was protected by Bishup.

yea, he probably didn't see that his queen was protected. Plus the short time, he probably thought the bishop was trying to exploit the pawn pin.

study the endgames first i think

In my opinion, the worst move in the game is 35. ... Kf2

Bxd4+ is a very natural move. and I'm guessing the reason that you didn't see it is because you didn't anticipate that the b4 pawn was hanging. You don't seem to be able to recover from your mistakes by making even natural moves in the position. Which seems like an emotional response.

If you're suffering from anxiety in your games, that is the problem you need to solve.

The answer is always tactics. In that specific game, you fail to see a pawn is hanging; that's an issue pertaining to board vision which is most directly targeted by training tactics. Also, foreverweak is right, you can't assess your strengths and weaknesses off of one bullet game. The time control and sample size are both horrendous for an assessment like "I often find myself making slight mistakes in endgames and losing because I'm a pawn down". It's very generic since you could lose a pawn a million ways and it's not demonstrated by that happening once in a bullet game. Just keep focusing on tactics and the resulting increase in strength in areas you're weak at such as board vision.

Also, I noticed you're playing a lot of casual games and chess variants. Fine with me, but if you are asking yourself how to improve (or do so faster), then that's not the best way to go. Focus on one game at a time and play rated games to be able to track your progress (or lack thereof; either one you want to be aware of). Tactics, slow enough games, analysis, repeat. If you are anxious about your rating, you could consider starting a ranked-only account which you use to track your progress and try to consciously dissociate yourself from that rating. That is, try not to get attached to it; the rating does not matter, the long-term improvement is what you're going for; potentially large fluctuations in rating are expected to be a part of that!