Bad Anxiety

I’ve always had anxiety or what I think is anxiety. I literally have so much trouble talking to people, especially strangers. Like I get super nervous and I always tell myself to calm down and just relax but then when I talk I say the wrong thing or mess up what I’m saying and/or talk really fast.

I have to like rehearse in my head what I’m gonna say, especially if I’m ordering food. When I’m talking to people I get so anxious and I feel like I make a fool out of myself. I literally try to avoid talking to people as much as possible. I just genuinely get so nervous and scared to talk to people and my family makes fun of me for it and say I’m overreacting. My mom doesn’t believe having anxiety is a thing, so I know she’s not going to take me to a doctor or anything.

Does anybody have tips to help?