> I don't really do small talk because I don't know how to talk about random nonsense that seems to be without a point.

I've learned (read) that the point is to size up the other person and get a feel for them. What is actually said is somewhat ritualized - safe topics. Makes sense; avoiding conflicts. You could go outside right now and start asking people "Excuse me, do you have the time?" Or whatever, just for practise. Then when you need to do it, it becomes easier. I know it's hard at first. Just like it's hard for me to say, "Hi. How do you like the class," or whatever, because I don't know how to evaluate people. It's uncomfortable.