Job stresss need help

So I recently got my first job as a cashier in Walmart. I really liked the pay and the store at first but I’ve been here almost two months and I can’t stand it anymore. I hate everyday of it. I tried liking it and what not but I’ve realized it’s not what I want. I wouldn’t care if I was just “okay” with it but I’m not I can honestly say I hate it. They told me they were flexible with hours so I requested a weekend off (mind you I already worked like 5 weekends and still am working them) cause I’m not from here and need to travel three hours just to visit my parents and I can’t do it when they give me off during the week cause that’s when they work. I was okay with my schedules when I first began cause they were good hours but now I’ve been put for two weeks till midnight and one day I got out at 12:15 and a guy who’s been working there for 5 years said that it was weird cause he’s never gotten hours like that. Also, the day I worked till 12:15 it was me and another cashier. I was the only one working while he was just talking to the managers standing around and just joking and they never told him anything. They also overlook me when it comes to my breaks they always forget which I have to remind them. I want to quit but then I feel the guilt of only working there for a short time and the fear of not getting hired cause of it.