Many people are finding getting full time work in their field and at their ability level is very difficult for the past 5-6 years. If you are supporting your life style without racking up debt, then you at least are in a situation where you have 2 jobs even if part time.
Other options are
Networking within university to discover other situations while keeping your part time jobs.
Doing temp or self-employed work to fill out your income while keeping your part time jobs.
Seeking full time or part time work outside the university while keeping your part time jobs.

Patience may be better than an impulsive decision to leave the university and have no income and possibly no jobs like you are looking for. This is a structural unemployment situation. This isn't just you can't find a job. The whole job market has changed.

Patience is my opinion. Better with something that could sprout into a full time job. Networking with people in your field or even doing volunteer work or whatever they call it, an apprenticeship could be a road into your field.

Thanks for sharing!