can people somehow see if you are 'unsure' of yourself

There's a book by Daniel Goleman called "Social Intelligence." His research shows how our brain waves sync during social interactions.

Not all of us "sync" that well with others.

Yes, they can. I suggest u fake confidence until u feel it.

It's more obvious when someone with no self-confidence tries to pretend they do. Just be yourself and learn from it.

Depends. Some people know right away, others can't really read emotions well.

Oh yes definitely so. I feel that way a lot too because social anxiety lol

That's true.

Yes

Yes like on here,you ask the same questions almost every day,so that right there tells you are.