How do i overcome social anxiety in rp? i’m perfectly fine in public irl😭

i am new to rp, it was one of the reasons why i bought a pc but for some reason i am now too scared to talk to someone, i dont know if it is because i am worried of making a mistake or taking too long to do something because i am also brand new to using a keyboard. Has anyone else had this issue and if so how did you overcome this?