Some jobs bend around a timetable and some simply will not
The most important thing about student work is rarely the work. It is whether it can move.
Jobs fall roughly into two families. Some are built for changing availability: rosters set weekly, shifts that can be swapped between staff, a manager who is used to student teams and expects the pattern to shift each term. Others are built for stability: fixed shifts, thin staffing, a schedule set far ahead, and a genuine problem if you disappear for an assessment period. Both can be good work. Only one of them survives contact with a timetable that changes every few months, and the difference is almost never advertised, so you have to ask.
Ask before you accept, in plain language. How far ahead is the roster set. Can shifts be swapped, and with whom. What happens when my timetable changes at the start of a term. Has anyone here worked around study before. Listen for whether the answers are systems or favours. A workplace that says yes, we do that, here is how, is offering something durable. A workplace that says we will look after you is offering the goodwill of one person, and goodwill leaves when that person leaves. Get the shape of it clear while you are still the person they are trying to hire.
Then think about what the job pays you in things other than money. Proximity is worth real money once you count travel. So is work with people your own age, which is one of the more reliable ways to meet people when you are new, and work that leaves your head free for the rest of the day. Consider too whether the role builds anything you could point to later. It does not have to. A job that funds your life and does not intrude on it is entirely respectable. Just choose it knowingly rather than accepting the first thing that says yes.