I am a kid learning to use blender to make an animation for a school project. I want to add bones to my mesh such that it can bend its legs in a knee-like fashion. I had already animated the mesh to walk forward and at the end of that animation I wanted to add armatures to the legs.

However, after positioning the bone inside the legs and doing Ctrl-P and setting as automatic weight, the leg displaces. Even if i parent it and check the 'Keep Transforms' box, it stays there as if it parented properly but once on a different frame it gets displaced again. I am at a loss as i have looked through many posts which seem to have the same issue but none of them seem to work.

<----BLEND FILE I am a kid learning to use blender to make an animation for a school project. I want to add bones to my mesh such that it can bend its legs in a knee-like fashion. I had already animated the mesh to walk forward and at the end of that animation I wanted to add armatures to the legs.

However, after positioning the bone inside the legs and doing Ctrl-P and setting as automatic weight, the leg displaces. Even if i parent it and check the 'Keep Transforms' box, it stays there as if it parented properly but once on a different frame it gets displaced again. I am at a loss as i have looked through many posts which seem to have the same issue but none of them seem to work.