If you are fortunate enough, put your kid in private school where smartphones tend to be banned in elementary and sometimes up to middle school.

Beyond that, I don't intend to give my kids a device until they are 10. (Heavily restricted smart phone) and won't be allowed to social media until they are 13-14.

My home state of South Carolina just placed a statewide ban on smartphones for our public schools, which is a good thing because the private schools in my area are worse than the public ones