how do you get an “entry-level” part-time job

i’m talking walmart, sobey’s, superstore. basically i would love to get some overnight shifts or even just some stocking/cashier jobs just to help out with the bills.

i have a diploma and a lot of years of experience with customer service. idk why, i apply to so many of those types of jobs but cannot seem to get a single one.

what should i do?