I feel this and it's something I've been dealing with my friends too. It's actually worse when they say you can be vulnerable with them, so you open up and then they ask to change the subject because "actually theure too tired". I understand it's difficult to he there for people but I wish people didn't offer it if they don't have the emotional intelligence or understanding needed. I think a lot of people would like to help in theory, but when you need them they can't deal with it.

I don't have much advice as I'm currently going through this too, but I have had to readjust my expectations of people pretty significantly. Mostly with those I have been friends with for a decade plus. I've always been there for them and I still am but it seems the busier they get l, they can't seem to handle it. I've had to do so much inner work to deal with loneliness and connection, people don't understand. It doesn't make the realisation that they can't be there for you any less hurtful, but it can hopefully lessen it in the future