My solution? No Social Media at all (no FB, Twit, nada). Don't use Google (Use DuckDuckGo). Use FireFox with NoScript and a good cookie Utility (I use Cookie AutoDelete and Cookie Quick Manager). And a good VPN (Mullvad is a good choice...no traffic logging). A VPN will have to be turned off when necessary, as some sites (Amazon, Netflix, etc...even this forum...it breaks member functions) won't "work" (in example, I can't post here with my vpn running).
Another good practice is to get a good
password safe and use different passwords & usernames at every site. Also use different email addresses. Free, throw-away email addresses are easy to come by. You can't have a different email for
every account, but you can have 20 or 30. A password safe helps you here too.
No one can completely fly under the radar unless you live in the boonies and have no internet or cell phones, but the above goes a long way.