Hello @bumblebee12, welcome to the forums!
Social anxiety sucks.. totally get that.
Anyway, yep, I can see your post!
Basically how this works is if something's worrying you, you can make a new thread (just like you have here)
If you want to mention someone, you just type @ and then their username. That way they'll see it in their notifications.
Also it's definitely worth having a read of the guidelines if you haven't already.
And you can go onto other people's threads and speak to them if you want. There are some cool Hanging Out threads that can be pretty fun to go on, if you just want to do something lighthearted while you adjust to the forums.