S.R.
I have been using a good old fashion box fan for much of my adult life and it really works...take it from the worst sleeper ever...me! I'm so sorry I didn't know about this when I was a kid. I was constantly sleep deprived, cranky and tired. I face it toward the wall in the corner of the room and put it on the 2nd setting. I am an extremely light sleeper (when I finally fall asleep) and this has really helped.
The other thing, contrary to everything you hear about technology, is I bring my phone to bed and watch a really boring YouTube video (like interviews or people just talking). It works every time to lull me to sleep and back to sleep if I wake up (this is in addition to the fan) - I put the face of the phone down so the light doesn't bother me.
Sometimes if I'm traveling without access to a fan is I use a phone app for white noise. I use ear plugs. This works okay, but the earplugs can get uncomfortable.