Limit Access to Safe Mode, Android 8.0+
you can use any number of kiosk apps to do this. I'm really not sure what they require or how they work, but they're designed for companies to lock down features for employees etc. as such they're somewhat spendy for Android apps, but I did see at least one for $30/year including tech support. 

sorry I can't give you more info, but look in the Play Store for "kiosk" and take a look. I'm currently researching the same thing.