What extensions do you use? What browser do you use? The only thing a VPN helps with is hiding your IP. If you dont use a good privacy browser like Mullvad/Librewolf or Cromite, you are still easily trackable regardless of VPN.

The only extension I recommend for privacy and security is uBlock Origin. There are some other good extensions but none that are as significant. More extensions can actually increase your trackability, aka browser fingerprinting.