The wheel might be passive and that little piece to the right might just be counting clicks.
I love my standing/sitting desk. I use an uplift from thehumansolution. I've been using it for about 8 years now. I bought one of their frames only and removed the desktop from my old desk to mount on top. I'm not sure if they sell just the base anymore, but I see they have a lot of options. I also use a lifespan brand walking treadmill under mine that I've been using just as long. I highly recommend both. It has done wonders for my back issues that kept getting worse after prolonged sitting.
It is not wobbly, and I have my entire desktop and triple monitors with heavyduty tri-monitor base on top of it.
https://www.thehumansolution.com/uplift-adjustable-height-standing-desk
Yes, the no phone in bed rule is a good one. I also try not to look at my phone first thing in the morning aside from turning off my alarm. Then I get up and start my day before checking the phone. Don't let your phone dictate your day, start it yourself with intention first.