I can’t suggest anyone because I use gsuite legacy but in 2022 when they were going to stupidly start charging for something they said would be free forever people put together a spreadsheet comparing providers. Might be out of date for some but might be helpful.
Here is the Reddit thread for it and Here’s a direct link to the spreadsheet
We got an iPhone for my niece who is 8. It’s locked down so all she can do is text, call, and take pictures/video and she can’t contact anyone not in her contacts list. She has some games but can’t use them for more than an hour per day and they won’t open during school hours.
A big issue is parents not bothering to learn how to use and set up parental controls.