It depends on the proxy provider. Some log everything, others don’t. Paid ones like NordVPN or ProtonVPN are more trustworthy than random free ones.
But even then, like others said, fingerprints and cookies can screw you. Try Brave Browser in Tor mode—it’s a decent combo with an anonymity proxy.
But even then, like others said, fingerprints and cookies can screw you. Try Brave Browser in Tor mode—it’s a decent combo with an anonymity proxy.