Get out of the deal. You asked and that is the advice you got from everyone.
After you take care of that come back and ask the right question, “Can anyone recommend a great vacation location that I can arrange myself?”
Lots of good advice.
Let me add a few things.
We bought one: never again. We were young, and it was before we had kids.
Advantages: We went to some great places by exchanging our week. Disney, skiing out west. We used it as a chance to explore and see new places. As kids got older we could change to different kinds of places. Also forced us to to on vacation once a year!
Disadvantages: Cost. The yearly maintenance fee (700 bucks now) the Exchange fee: 130 bucks and the membership fee - It think another 100 annually). So - it costs another 1000 bucks a year to “own a week” which we also paid for.
We no longer own. We have had great luck with a few websites: Vacation rentals by owner (vrbo.com), Priceline and hotwire - and lots of other sites.