Am I the only one who wakes up between 5 and 7 a.m. for no reason and feeling always tired?

For the past 4 or 5 years, I've been suffering from lack of sleep. I go to bed around 11 PM without any trouble falling asleep, but I wake up naturally around 5, 6, or sometimes 7 AM for no apparent reason, and I can't fall back asleep (I keep track of when I fall asleep and when I wake up). It feels like I'm waking up at the end of a sleep cycle, and I'm always tired because I haven't slept enough.

I've had several tests done. For example, a sleep apnea test came back negative. I also had blood work done to check my stress levels through cortisol, but my levels are completely normal. I live a very simple, stress-free life, so I really don't understand where the problem is coming from. I even tried acupuncture with two different practitioners at different times, but it didn't change anything. 🫩

It's extremely frustrating and has a huge impact on my life. It's as if I start every day with only 40% battery because of sleep deprivation.

I'm feeling a bit desperate and would love to know if anyone else has experienced this, and most importantly, if you found a solution, because I'm out of ideas. 😞