How do ppl make friends?

idk how to do it. If I search for friends online I probably only talk to them for one day and that's it, I cant start or continue conversations. I'm scared of calls and I feel like everything that comes out of my mouth is embarrassing, plus my hands literally shake when I text anyone. Even if I do get a friend I always say the wrong things and then they don't talk to me anymore.

I feel like I'm broken or something bc everyone else makes it look so easy.(╯°Д °)╯