I'm not a real artist. I do programmer art for game jams, MVPs, UI mockups, etc. I always liked Affinity Designer on iPad for that. It's got nice Apple Pencil support, it was inexpensive, and it works with other file formats pretty well.
Last time they had a sale on their "Universal" bundle, which got you Mac, Windows and iPad licenses for all their products for $100, I had just received some illustrator files that I wanted to work with on my desktop and decided to go ahead and pick that up.
I now find myself using Photo and Designer instead of Krita/Gimp and Inkscape, because I'm more efficient with it as a non-expert user and because the .psd and .ai interop is better.
I need to deal with one of those two file types approximately 0.75 times a month, so the industry standard one feels eye-wateringly expensive. But a one-time $100 fee for a less frustrating experience than the open source ones offered felt worthwhile to me. And they've grown on me to the point that I pick them up when I need to make something for a game jam, not just when I need the interop.