Well, if you can find a VPN that's more trustworthy than your ISP. Some of them are pretty sketchy too.

I think disabling third-party cookies helps a lot. If each site can only see its own cookies, it's harder to coordinate. Also, browsers have started experimenting with separate cookie jars for each top-level domain. https://techcrunch.com/2021/02/24/mozilla-beefs-up-anti-cros...

You could also use the Tor Browser...