How do i fix no animation glitch that i got from nowhere?

I tried making my own animation and I followed a tutorial but when I tried I had no animation so I just planned to walk straight without any animation please help me this is in dangering my progress for my game here's a vid of it--> file:///C:/Users/Datorn/Downloads/Sans%20fighting%20battles%20-%20Roblox%20Studio%202021-01-18%2020-18-26.mp4