How do I stop acting so weird?

Other people have called me weird. Most people say that you shouldn’t care about what other people think and if you’re weird, that’s just who you are. But I find that the things that make me weird are things that I do BECAUSE I care about what other people think. E.G. Cracking a super off-topic joke which I think other people will find funny because it’s unexpected. I tend to think that super overused jokes are stale and won’t cause people to laugh. All I want is to just stop trying to please other people, but I don’t know how. It’s like it’s impulsive and instinctual.

Edit: I think it’s important to note that I’m not awkward whatsoever. I’m not scared of doing anything socially, which leads me to doing dumb stuff.