People deleting their accounts or not wanting to talk to me why is that?

So many people I talk to on this web site are not a part of the website anymore they have deleted their account. So many people who love my photography some of the pictures of shoulder have said if you take any great pictures in the future send them to me and also one person she lives in Wales who also plays clarinet like me was very interested in talking to me and I only started talking to them two or three days ago and they've already deleted their account and I can't talk to them anymore and it's happened to about can people I've talked to since joining this website.

Also I send people a message because I'm interested in one of their posts and they either do not respond with a respond once and never respond again