Privacy crash course (non exhaustive):

- Do not use social media

- Install Linux on your PC/laptop, buy a phone compatible with GrapheneOS

- Self-host any cloud services you may need (file sharing etc.)

- Communicate over Signal or self-hosted Matrix/XMPP

- Use throwaway SIM cards and phone numbers where they make sense

- Unplug the cellular modem in your car (if applicable)

- Pay with cash or crypto

- Use fake identities for anything that isn't government related (paying taxes)

- Use Tor, VPNs, and ad blockers