Hey Wolfy!
I too have struggled with sleep issues when I was growing up. There are a few things that you can do to help regulate your sleep schedule without seeking help. If these don't work, I would talk to your doctor so that you can get the help that you need.
Here are somethings that helped me:
-Do not eat 3 hours before you sleep. Give your body some time to digest the food.
-Try to cut off screen time an hour before bed. Blue light keeps your brain awake, as blue light stimulates the brain the same way that day light does. You mentioned that you watch videos at night. I would try to stop doing this, as tempting as it is!
-Drink some white tea. Camomile and peppermint will do wonders! It relaxes the body.
- Regular exercise also helps.
-Baths help too! Don't have a bath? Take a warm shower!
-Essential oils also help! I use a sleepy time blend and it helps relax the body and get ready for bed. The mix that I use is this one.
-If this does not work, I like to take a melatonin tablet. I use Trader Joes's brand. I like using this over another sleeping product because it is all natural and non-additive. I do not suggest using this every day, but it helps when you are in a pinch.
Hopefully these tips help! If not, I'd suggest talking with a doctor