How to avoid oversleeping during weekends?

I think I've got trapped in a vicious cycle. I tried to get more sleep during weekdays, but for many reasons, now and then I didn't sleep enough. And on Friday afternoons and evenings I often feel tired. and during weekends, I often have nice naps. But that made it difficult for me to go to bed on time on Sunday night, so Monday mornings it was very difficult for me to get up. I didn't feel well on Monday the whole day, then Tuesday I am usually totally fine. I don't know how to get out of this vicious circle. Currently I live by myself in my apartment, so not enough self-discipline I guess, and no one reminds me not to stay up late on Sunday evenings. Really want to get out of this vicious cycle. I know it's very bad for health.