There are phone apps that do an amazing job of monitoring your sleep for apnea, snoring and deep sleep/light sleep patterns.
I’ve been using “Mintal” from the apple app store. the free version.
I had surgery for sleep apnea in 1999. It made a big difference. I used Mintal to see if the apnea has come back. It hasn’t but I have other sleep issues, like irregular bed times, allergies that wake me up at night with sinus issues, and short sleep times. I snore on average 9 minutes a night, which isn’t bad.
Get an “O2Ring” from Wellue. It is a continuous recording pulse oximeter you wear while you sleep. It stores four nights of data which you can download to your phone or to your computer, It really helps me understand what its going on with my breathing at night (in addition to the CPAP machine). It’s the perfect adjunct to CPAP. You can review your CPAP machine data in the OSCAR program on your computer and import your O2Ring data as well.