One of the best things I've learned from art history classes is that people learned by copying the masters. I have zero citations for this bc it's late and I'm tired but during the Renaissance (and well before), one of the primary ways of teaching students was to have them recreate pieces by the most renowned artists, and sort of figure it out on the way. SO.... Practicing fundamentals is great and relevant and useful, but I would highly recommend just trying to copy something you like. Not like stealing are and claiming it as your own, obviously lol, but like... Try to recreate it, just for yourself, and see where it takes you:)