I’m not a professional 2d artist, but I think procreate is the best option if you just want to draw and paint without a big and very difficult interface. It’s just 20€ and no in pucharses. I have it to sketch things before doing them in 3D and it’s, in my opnion, the best one.
As far as I know artists like Nicholas Kole use it for everyday job.
Hope it helps :).