What's a good online AI image editor/replacer for modifying an image? I run the last good Windows (7) so most of the downloadable ones aren't compatible. I've discovered that the AI image generators have no idea what a tractor bucket is, or how to make something look like it's a fight. I shot some real photos, but need to get something that'll:
1) Sub "something that looks like a person in armor" for "J-H with a sword and a grey coat and modern pants" at night
2) Not screw up the actual tractor or other image elements in the process
3) Ideally restyle it to be a bit more art-like.

It seems like most of the AI generators will take a source image and then just completely throw it out for random blobs of light and grey walls even if I set the noise very low.