I am having one of those weeks, and this is just the final straw, I need to know if I am being U.
Old friend (30 years of friendship, which is why I am posting) I have struggled to stay friends with her over the last few years, and it has come to a head now.
When we meet up (pre covid) she just talks endlessly about herself and her problems, and she shows very very little interest in my life. Fine I can live with that if I don't see her too often, but it has made dread our get togethers.
Her dc are awful to mine - fine, I have taken dc out of the equation but she is unhappy about it, as she wants to do stuff with kids, and is annoyed that it has stopped.
She doesn't bother sending any birthday gifts etc to my dc but expects to me to ensure her dc have presents on time and on their birthdays by post, assuming I can't turn up in person, but she does not feel any need to do the same for my dc. My dc usually wait six months minimum.
To me the friendship just feels very unequal and if I am honest completely one sided, and has done for a very long time. I have put it up with it, because it is an old friendship, and one I thought/hoped would last to old age. I cherish my friends, this is not an easy decision.
But the worst part for me is that she sends me endless photos of herself pouting (she is nearly 50) bragging on holiday in different parts of Europe even in the lockdown, the new boyfriends and smug smiles. I am not on SM and hate that kind of thing, to me the endless bragging is really horrible.
I am really happy she is happy, and pleased she is having fun - but I don't need the constant photo evidence. She is always saying how blessed she is about different things, I wouldn't mind too much usually but the messages and photos were continuing when I was just out of hospital being wheeled to the car, when someone close to me died from suicide and moments like that. They are all about her, and are utterly tone deaf to my situation. Mostly she doesn't even ask how I am, and I just get captions of her latest 'happy' 'romantic' 'blessed' moment.
So I asked her (gently) to stop eight months ago, she agreed and understood or so I thought, but then she just ignored it, and carried on anyway! It started up again.
I was supposed to be 'happy for her' and she thought her photos would 'make me smile on the inside' yes she actually said that! 
So I asked again, please stop I am not in the mood for constant spamming with photos. I am recovering from surgery at the moment, and I feel it is insensitive at best, considering she didn't even ask I am!
I have decided to end this friendship.
I just feel she doesn't care at all about me, I am a trophy friend to her, thats it. Someone to brag to, or about depending on where we are. She is just not a nice person anymore.
I am not feeling my best, and I want to avoid making a permanent mistake, but distancing isn't working, she hasn't listened or respected anything I have said to date. I have finally had enough.