Good morning. I am an older learner - late 50's. I get frustrated as well. If it helps, one thing I have adapted to is that at my stage in life this is just for fun and there are some things I simply can't do, or become so frustrating to try and do, it takes the fun out of this. So I move on to something else. And frankly sometimes I cheat on cords - such as the G Chord. When I am playing something like "Wish you were here" I cheat like the blazes. Friends still recognize the tune and my timing is good so a bass player can fit in. That is more important to them than perfection. If someone is looking for perfection .... it doesnt happen here.
Best of luck.
This year the diet is definitely gonna stick!