It probably isn't how others see you, honestly. I notice your comment doesn't mention anybody else actually saying these things about you. Is anyone telling you that you move weird and have a creepy smile, or is that your own assessment?

I have this problem too, I hate listening to recordings of myself because I think my voice and movements are really annoying. But the people who interact with me never seem bothered, even strangers or jerks who have no particular reason to hold back from criticizing me. It's common to have a blind spot or disconnect when it comes to how we think other people perceive us. Unless they're actually picking on you, it's likely that you fall within their parameters for "normal" and they're not worrying about it.