Custom character random moving and a lot problem

[scw_048 (Hanksus)]

as you see, i wanna make a Chassis walking machine bot from Dummies vs noobs mastermind chassis
but the problem is it got hip problem like i have to change everytime different animation plays and it will
random moving, i have no idea why my custom character have this problem and others dont
i need help… if anyone could help me i would be grateful

[meet_theHAXER (HAXXER)]

does it have its own custom animations, you provided little information so I cant really figure out the problem

[scw_048 (Hanksus)]

its idle, my problem is i need make the HumanoidRootPart on ground so it wont random moving

and legs noclip to undergound
but. the model i got from ytb they dont need make it on ground and everyone i saw on ytb dont need

[scw_048 (Hanksus)]

nvm guys i fixed it with just make it on ground and size 5,3,5 + whole body except root else cant collide