You’re allowed to get another game even if you haven’t finished a previous one. You’re only here for like 80ish years so why not sample all that interests you?
This is what I feel. I’ve finished ToTK and Baldurs Gate 3 once(so far…), but beyond that I haven’t finished a game in probably years. Hasn’t stopped me from having fun in tons of games over the years. I usually play for gameplay more than story anyways, with a couple exceptions.