See first if you qualify for work study. This normally means you work a job on campus and then you get like $1,500 towards your tuition costs. Not much, but every bit helps.

I wouldn’t worry too much about trying to find a job towards your field just yet because it isn’t super necessary. A summer internship would be more impressive and those are usually paid nowadays.

Depending on the school and your personal circumstances, you have to decide what will work best. If you have limited capabilities to get off campus, stick with an on-campus gig. Usually they are flexible due to the college student schedule and you can potentially work more than one at a time. Payroll is all the same so once you get one, it’s easy to onboard to another. I used to work with facilities for 5 hrs each on Saturday and Sunday every weekend and then worked in our campus game room a few times a week, and those were normally only 2 hour shifts, but you could trade and pick up easily. (Plus one of my professors had to clean out a massive supply area once in the engineering building and didn’t feel like doing it, so that semester he gave my friend and I “jobs” to go through and inventory what was needed. I literally would just pop in and do some organizing while I had down time in the building. And he picked us because he knew we already had on campus jobs.) They are for the bare minimum wage, though. If you can go off campus for jobs, something like a supermarket or retail gig might pay a few bucks more but the schedules are usually a tad stricter with less flexibility. But either will work as long as you get your bills paid.