DeletedUser87 I could not agree more. When you step into the world of (I'm going to use the word Semi here because we are talking about mostly money hungry data harvesting that will to everything to defeat your perfect privacy setup) Semi-Privacy in the current state of the internet you are dazzled with choices. GOS is not created and maintained to solely support the more advanced user but also to drastically increase the security and privacy of the average Joe.
But yes, unfortunately there are many kinds of fingerprinting methods. There are billions of dollars working towards (or already working with?) fingerprinting methods we haven't even heard of yet (speculation but plausible). All that we can currently do is rely on GOS, rely on opensource projects to increase our privacy. If you want some more privacy and security while browsing using GOS try to use browsers like Vanadium for security or Brave for security and some form of privacy by badness enumeration. While it breaks my heart not to mention Firefox anymore it's not the best choice unless you use Tor or maybe Mull (I don't know enough about the hardening to recommend it).
VPN recommendations will stay subjective like I said before but they can slightly or drastically (depending on your ISP) enhance your privacy and security. However, it doesn't onion, garlic, or in any other way try to create anonymity online. It might help but it does not actively try to do this by bouncing you around through layers of encryption.
A VPN is a very useful tool to circumvent censorship and can help boost privacy and security. Regardless of suggested VPN providers (which is subjective based on current state and personal experience) if you find a service that does not log, has nothing to show in court, blocks trackers, ads, malware etc on a DNS level, and has your trust, it can increase your privacy and overall browsing experience. More so if combined with the right browsers and privacy friendly apps.