Remove too all the sudden painting random colors instead of removing

Hello, I am still getting used to the newer, updated Photoshop, and I've been using the remove tool all the time lately, to edit photos, and love it, it's been working great, using it mainly for small things within an image, but then all of the sudden it started removing by adding a solid color instead, see photos. As well, it's telling me I need a newer Mac to work properly, although I don't have the version they reccommend I've been using it fine with my computer for months, and even did an update to the newest version available for me, MacOS Monterey 12.7. Wondering if I just have a setting off. I've tried restarting, Reset Essentials, and I have Sample All Layers checked, as well as Remove After Each Stroke. As well, it is still randomly working slightly in certain areas (I added one photo where it's the right color but you can see the little circ le it made, but then when I do it again its yellow, so then was wondering if it had something to do with the photo itself, but I'm editing very similar photos all the time. Any help would be great, thanks!