For Android:
- Use ADB (or similar tools) to remove Facebook, Meta, Twatter, Instagram, etc., from all your Android devices.
- Use a tool like RethinkDNS or other firewall to block block block. If using RethinkDNS, apply good blockers too.
- If using a firewall that uses your VPN slot, setup wireguard to use your VPN host
- Have different browsers on your device e.g. Brave, IronFox, Cromite. Follow online guides to set up.
- Use DuckDuckGo, SearXNG or Mullvadleta to search
- Never access Facebook, Insta, Twitter etc. from your mobile device. In fact, if you have the right firewall / blocking set up, you simply cannot.
- Do as much online shopping from a laptop / PC with a secure browser. Also, have about 3 different browsers there too.
- If you MUST use Facebook etc., only do it from a browser on your laptop / PC.
Just my personal strategy. My firewall logs show its quite effective but not fully impervious.
Greek leaders adopted the policy of headlines of catching bad people vs catching actual bad people. Sadly same in UK, US etc.