can anyone recommend a paint.net style image editor for linux?

meaning, something a bit more fully featured than a basic Paint type editor, but not a full on art program like photoshop, krita, or (god forbid) GIMP. something user friendly a non-artist can use to mock up the occasional goofy image or whatever. flatpak preferred, if possible.

pinta is the best one i've found, and i could probably get used to it if i stick with it, but I'd like to know if there are better alternatives.

for anyone who uses telegram ive got some silly sticker packs ive made
-Really Good: around 80 jokes ™

-Even Better: around 35 jokes ™

-it's nothing: 2 sizes of empty stickers. it's nothing

-Little Bender Things: from littlebenderthings.tumblr.com

-Buntain Simpson: comic by chickensnack. has all the panels, and all the panels with the words edited out. really fucking good to play with like dolls.

-rosen: michael rosen faces

-Thank You For The Ass: all those images of Edgeworth and other ace attourney characters saying things like "I am... an ass" or "the entire ass" or "I have a special two-part ass"

-Loose Clown: this is a Line sticker pack that Jevil from Deltarune was based off of. I put a lot of work into converting the whole line sticker pack using various dark processes

-Steamed Hams But It's A Sticker Pack: i cant believe i spent time on this. every discreet part is a sticker

-slowpe: fun slowpoke line sprites :)

-Samba: my fursona :) expressing the core emotions of crawling darkly, biting, thousand yard stare, and wizard spells