I don't know if I can post the gif along, I apologize if I can, but I'll describe it the best I can.

I'm making a rotating gif for a loading screen for a mod pack. When it renders, the GIF is fully complete but a corner chunk off the top right and bottom left of the rotating figure gets stuck layered over itself. I checked each frame as a downloaded image, and there's nothing left there, so I'm guessing it has to do with the rendering itself

Any help is much appreciated! I'm still somewhat new to the software, so y'all would be a massive help.

Which version (number) of krita and which operating system are you using?

Where did you get ffmpeg from?

The easy/guarenteed way to share images is via a link to Imgur (or similar sites) and other files can be shared via a link to a file sharing service or website.
You can post images in a reply here using img tags with an image width limit of about 600 px.
I know Imgur provides a 'BBCode' link that is suitable for copy-pasting to a reply here.

For your animated .gif, it may be that you have transparency in the final rendered output, which will cause problems.
Do you have a solid colour background layer in your .kra file animation? If not then you should add one.

If that's not the cause of the problem and also the fix for the problem, can you share the .kra file via a file sharing link?