How can i edit my sprite collision ? (2D)

Hey guys, so I have a few problems with collision of the capsule component. What I want is;
When I use roll or when I land, I want my game to use my rocket’s collision box not the capsule component.
When I disable capsule component I can’t enable physics of my flip book/sprite that’s why I can’t move my rocket. So to enable movement I have to use capsule component
As you can see in the picture the rocket is not touching the surface because of the collision problem. Any idea about how can I fix this?