Different password and email for each site (I pay for Firefox Relay, only has one instance of a site that blocked it so far). Edit to add: Firefox Relay can also provide a phone number (for a cost) that you can use on sites instead of your own. There are caveats to keep in mind for when to use it, but it helps.

Proton Mail instead of Gmail.

Proton Drive instead of Google Drive / OneDrive. More expensive, so keep this in mind.

Proton VPN when concerned about the security of my internet connection.

Hosted VPS in a cloud provider for photo storage using an open source photo focused content management system.

Pihole hosted in a VPS to help block various trackers (and ads too, but that's convenience, not privacy protection).

Wireguard to connect to VPS hosted services. Option to turn on full tunnel, but generally obsolete with Proton VPN as an option.

Proton is on here a bit mainly because they offer a decent suite of services. There are others that are available.

The thing is, none of this is free and protecting your privacy rarely will be. There are FOSS solutions to help, but you generally need to pay for hosting and access (even if it's buying a raspberry pi). Proton is more accessible to many than something like setting up services on a VPS behind Wireguard.

If you wanna go full paranoid, you can use tiered personal VMs for web browsing. High security ones for things like banking and what not can be destroyed and spun up on demand. And others where it's less important can be refreshed at longer intervals depending on your convenience requirements. Still need to ensure your host/base images are protected, but it will minimize exposure on the guest vm to malware. Less likely to have a keylogger get your bank login info if it's a brand new VM each time.