Skinnedmesh in startercharacter is so weird in S1

Hi I’m DarkBegin I’m working on my first skinnedmesh character, actually, I tried to play into it

.
It’s a S1 character (1 Meshpart with bones)
I put a humanoidrootpart to give it a collision.
But when I’m trying to move with the character he’s doing whatever.
He can’t jump. He doesn’t play his walk/run animation.
In the gyazo I put the run animation in /e dance that’s the reason he’s using the running animation.
Any idea to fix it?

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