How to deal with rejection?

Hi everyone, I’ve had rejection my whole life whether it be from my parents, from other family or even from others. I’ve never been able to take it. I don’t know how to feel when people I talk with just leave with no notice or anything, I just wait and nothing happens. I really want a friend to talk with daily but I’m so fearful of this happening again that basically I’m so scared to make friends, does anyone have any advice? Thank you. Daisy x