Could anyone help me improve my animation skills?

Hi, the names ghost, I’m a relatively new animator and have done several animations in the past. But something bugs me…I can’t seem to get any “better” at my animations. They always look…crappy? In a sense.
Is there something I could make better?
Something I need to work on?
I really want to improve, and feedback is very much appreciated!

(I would just put files of all my animations, but A) I don’t have them all saved as .WICK files and B) I’ve made animations that I haven’t even saved. I’ll just put my YouTube and people can see my most recent works. Sorry for the inconvenience.)