The only point of a commercial VPN is to do peer-to-peer without exposing your home IP address. If you are into Proton and their suite of services than you can get ProtonVPN but don't expect anything else since Proton is NATO-aligned, otherwise you can get AirVPN which does sales yearly (I got 6 months for only $15). The other use of VPNs is geo-spoofing (aka: using Netflix under a VPN to get access to other content), but I can't speak on that, Mullvad might be a good option since it sports a lot of server locations.

Avoid any VPN that requires an email account/personal details up front, it's likely a Israeli shell company (no youtuber sponsored vpns, they all suck).

If you want to use a VPN for home server stuff then you should look into Tailscale since they have a free tier for personal use (connecting to your home server while outside the network).

Otherwise, there are more useful things you can do to improve your security instead of using a VPN:

• Use a libre web browser: Firefox+Derivatives or vanilla chromium/ungoogled variant
• Make sure you have HTTPS everywhere or equivalent on.
• Use services like email aliases for online accounts.
• Use an up-to-date GNU/Linux or any other free/communal operating system instead of US State Dept. ones like Windows and MacOS.
• Use Ublock Origin.

It bears mentioning that a VPN is not a magic bullet for privacy.