I leave my phone further away.
Close enough that I'll hear it if there's an actual emergency, but far enough that I won't reach for it just because I'm bored.

That's enough to take care of most of my mindless night scrolling.

If I just can't fall asleep, sometimes I'll go drift off in the hammock outside or something that'll cool my body a bit.
Tbh, sometimes I just rub one out ¯\_(ツ)_/¯
Also works as a decongestant.
I'm not a doctor, don't use this as medical advice.

Supposedly the best thing to do is to lay perfectly motionless in bed despite being wide awake, because that's still a form of rest and "better than nothing". This isn't always what I do myself, though: sometimes I will take an extra melatonin tablet or use the bathroom, and I always wear my trusty eye mask in any case; but if you absolutely have to fidget with something in bed, I think the most recommendable thing is physical paper books. Either books for reading, including comic books; or a notebook into which you can jot down ideas, journal, doodle, whatever it may be.

Look at the stars for a while.

Lately I've been watching videos from twoodfrd on youtube. Guitar luthiery. Gets me napping like no other. Found another that seems promising "Machinery Restorer". Turn on subtitles if you need to be quiet.

Lay still in bed with the lights off and my eyes closed. If the reason why I can't sleep is noise, I'll put in an ear plug. (Only one, because my other ear is on the pillow and blocks everything out.) Otherwise, I just... you know... try to sleep?

I leave my dark, warm place of sleep, walk into a room with a light & cool air, stay for a few minutes, maybe have a drink of water, then lay a heating pad across my stomach and go back to sleep.

headphones?

Read until I fall asleep again

I meditate. Very occasionally, I still am not ready to sleep, but it still helps me to do that.

I listen to a podcast, if nothing else works.

Mostly, I don't worry about not sleeping. It took me years to feel OK with not sleeping, but here I am.

Peace.

If I can't sleep I get out of bed and play video games until I fall asleep. Sometimes that means a full night of gaming but most of the time I get tired after an hour or so.

I put the phone down as the light coming from it is part of the reason your brain is staying awake.

I sort out and organize my thoughts, problem-solutions and a plan moving forward. It takes a while, but I get a sound sleep afterwards

I've been playing mudborne.

Get up and have the cats bite my elbow.

Doom scroll.

Ambien.

Throw on an eye mask and headphones and turn on an audiobook.

Call it quits and get started on work, play a video game, run or workout.