the collison size of player is so big, we keep getting stuck

lower the collison size please

its so not fun getting stuck all the time

Collision size could use a tiny adjustment, I agree. But i think a bigger improvement could just be making it so players are more slippery against each other (maybe something like rolling path-finding) instead of how much friction you get running into each other. If the latter event felt a lot smoother I think that would alleviate a lot of the issues.

i agree