Mesh deform when rendering

Hello! I am having this problem where my mesh was just completely fine in workspace but when i render, it looks really weird, it’s some sort of deformation. When exit out and rejoin, the mesh just completely goes wrong like it did in the render.

When it first rendered:

How the workspace looks the first time:

How it looks after I rejoin:
in next post below

Helps are appreciated, thx!

How it loosk after I rejoin: