[jahewson]

You should try to find a new advisor. Try seeking out other potential advisors in the department for advice on your work. Work through some task with them and if you have a good rapport, schedule another meeting with them and explain the situation. Maybe you can pivot your work in a direction that suits their expertise better.

It might be that you don't need a new advisor as much as a mentor or co-advisor from your department. That might be an easier solution politically.

Universities deal with lots of problems all the time. Figure out who the right person is to reach out to and seek them out.