@jesseross Much depends on HOW you want to play. Some are made for adapting group games to solo play. (e.g. Mythic) Some are group games with solo variant rules. (e.g. Ironsworn) Some are designed for solo play from the ground up. (e.g. Glide) Some are pretty radical revisions of the idea of role-play gaming. (e.g. Quill)
You might also get some suggestions via #soloClub.