I started with no TTRPG experience at all around a year ago. There are some games (like D100 or Four Against Darkness) closer to a boardgame than an actual TTRPG. You throw dice and go with the results, no need to roleplay.

Regarding solo boardgames, I would say games where you play alone together, like each player doing it's own thing in the board with minimal interaction or minimal rules modifications. Spirit Island already mentioned is one great example, Cartographers, Sprawlopolis or Agropolis, Resist!, One deck dungeon... seriously, there is an amazing amount of options depending on your taste (deck building, throwing dice, etc.).