How do you keep friend after not meeting them anymore ?

Hi, so the problem I have is that when I meet people and become friends with them it's just lasting until we don't meet again at school or in other senario.

I'm also someone who likes to listen to people's stories and know what they do and not really talk about myself (even if I talk like crazy when I'm having a great conversation). I don't really know if it's a problem to make long term friend.

A problem to mention is that I'm really shy and texting people feels like impossible, even to family, and I don't know how I can fix it.

Most of the friends I got are by having an opportunity to talk with them. I'm really bad at making the first step in anything. I'm trying to improve my social skills by watching some posts and hoping i can improve in the future on that.

If someone knows where I should start to keep friends i get and if you have tips to help, I will gladly accept them

P.S: Sorry in advance if my english is not perfect