I used to use paint.net quite a bit in the past, it kinda fell by the wayside tho

Gimp is super capable, it just thinks differently than some image editors. Mostly because its a picture editor first, and a drawing/creation program second. Once you get used to it, know where the tricks are, and set up presets for the effects/dropshadows/text you use for memes, it’s just as quick as any other though.

If I just need to make a normal 2009-level Impact font meme though, I honestly just use ImgFlip. It’s the easiest and it works on my phone too.