Why is my anxiety so weird?

I have anxiety but my anxiety is so weird. During the day you could not make me eat out at any dine in place or restaurant. It doesn’t matter who I am with, whether that be family members, friends or even that special someone. I will not do it, I get shaky and a really weird feeling in my chest. But if I was to go eat at a restaurant with whoever at night time, I’ll be fine. It’s so weird and it bothers me. Another odd anxiety thing I have is, when family members notice I’m freaking out about something in public I get really defensive and rather angry and try and act like I’m fine and I avoid my family until we leave the shop, I will literally try and act like I don’t know them, and I don’t know why I do that but I can’t seem to control it. I also noticed that at night time my anxiety is gone, I can literally go to anywhere and not be scared in the slightest.. it’s so weird. The next odd anxiety thing I get and I’m ashamed of this is, I sometimes get anxiety around my parents when we’re out and such, I don’t know why I do and I despise it as I shouldn’t get anxiety when I’m around my own parents. Why is my anxiety so weird?