Thanks llama_l, all helpful responses, not because I understand any better, but because of the encouragement. This game (even this move specifically) is a great example of what I mean. As you can see I had already blown this game about 15 moves earlier, and was having trouble figuring out what to do. A few moves were just trying to see what I could make of it, even though I knew I couldn't really save it. BUT, the move you chose is really interesting, because it's EXACTLY the move that caused me to post this (or rather the most recent move that caused me to post this).
Of course the bishop can just take, but it's a great example of something I just didn't calculate, I just didn't see it, and it's where advice gets really frustrating, because it's usually "the bishop can just take there" Well, no duh. What I need (and maybe your advice will help) is a way to see that BEFORE I make the move....
But, frustratingly, that's what I haven't gotten better at in years of practice, and it's sort of why I think chess might just not be the way I think.
So this is a combination question and comment that comes out of frustration.
My calculation is absolutely awful. I know this, and I see it over and over in games I lose. It's one of the reasons I feel like for me chess might just be a huge waste of time.
I can't understand why over time I haven't gotten any better at calculation - or at chess in general for that matter. The only answer I can come up with is that I'm just not wired for how chess works. Some things come super natural to me... chess though isn't one of them.
That said, the advice I've seen and videos I've watched more or less amount to "suck less", and usually comes down to something like "improve your vision" which is a bit like telling a colorblind person all they need to do to be better at seeing color is to be better at seeing color. When you can't see it, the advice to "just see it" is just terrible. Or the advice is practice tactics, or review your games... none of which has made me any better and now only bores me, because none of that has helped me improve. People even say "I reviewed your game and you blundered at piece"... yup... I know., I was there. The problem is seeing it BEFORE it happens. 8 or 9 times out of 10 there's some HUGE mistake I didn't see that costs me a game - and often it comes from bad calculation.