How would I fix this texture?

Hello, I have no knowledge of making 3D models or texturing them, however I am efficient at tearing them apart to get specific portions out of them, and I did this recently to remove the tools from the belt on a torso mesh, and I didn’t think the texture would be affected, however, it was.

Here’s the image, the left mesh is edited, and the right mesh is the original:

The only software I have is Paint.net and Blender (which I used to edit the mesh.) Is there an effective way to edit the texture so it will fit on the edited mesh, or am I better off attempting to create my own texture set for the entire package?

You messed up the uv map when you cut it out. I don’t know what you did wrong though. It should work fine when you remove parts.

I think I know what I did, I didn’t know what UV was so I played around for a moment and I think I removed one of the parts (vertices or edge I don’t know) and I don’t know how to undo that. I can probably just restart, which is no big deal, but I probably shouldn’t have screwed around more than I needed to haha.