Going for hunt-WA zombie thread revival award. Lots of people looking for free or low cost photoshop replacements with Adobe going with subscription for Photoshop as well as looking for Linux replacements as Windows 7 extended support ends January 2020.
Here is a decent comparison of Gimp, Krita, and Photopea as well as mention of some other tools such as Inkscape and Pinta.
It says Linux alternatives but there are Windows versions, and Photopea is browser based.