Blue period?
Whiplash (movie), Black Swan (movie. Perfect Blue inspired it, but I can't remember if there's the obsessed artist trope in it. You can totally watch Perfect Blue as well if you haven't), Blue Period (manga), Ballroom e Youkoso (anime or manga. The protagonist is not exactly what you're looking for, if I remember correctly, but there might be other characters who are).
These are not with artists, but the obsession is there: The Queen's Gambit (TV-show), Challengers (movie), I Tonya (movie), Ping Pong The Animation (anime or manga), The Climber (manga), Hikaru no Go (anime or manga, it doesn't go all out with the trope, but there are some characters who are almost there).
Oh, forgot. The Queen's Gambit is an adaptation of the book with the same title, by Walter Tevis, if you prefer that.
does anyone have recs with this trope? can be any media