Isn't orbot good ?

I see ads for Mullvad all over nyc

They are pretty privacy aligned, even encouraging payment in cash or bitcoin to have as little info on you as possible. VPNs are good but they can be a honeypot of data. Use a good one but also use Tor and alternate DNS (NextDNS for example). Those two tools go a long way in and of themselves.

Orbot is good but technically not a VPN