Hello, and welcome to Dreamviews, Carina!

Are you usually exhausted before you go to bed?

Years ago when I was first figuring out what lucid dreams where, I had situations in my dreams where I can't open my eyes, and the frustration eventually becomes so intense that I wake up. I figured this was because I had an irregular sleeping pattern, and after I managed to clear that issue up the "sleep within dreams" problem also went away.

I hope I've answered your question, or at least given you something to think about to help you get better at lucid dreaming. Good luck to you, and happy lucids.