Get them to check your thyroid levels, that’s what it was when I was feeling similar at 24. It took years for me to feel normal and have energy again but it’s treatable.
I was losing hair in the shower, I had dry skin on my arms and bad dandruff and I was exhausted all the time even after a large dose of aderall in the mornings. My TSH was 20 when it’s supposed to be below 6.
I put Ubuntu on my year old Windows laptop and to my surprise, everything is just better. I mean better than Windows AND better than Linux ever was before when I used it previously. I wouldn’t be surprised if we start seeing some major manufacturers shipping PCs with Ubuntu pre-loaded in the coming years.