This is a bit of a misnomer. No one PC can be fully anonymized or fully private, even if the PC provided fake data points, they will still be technically fingerprinted. Having said that, having a browser that tries to spoof stuff like LibreWolf, Tor or IronFox is decent.
The gains in using a VPN, among other best practices is that helps --assuming people do not log on to something like Google-- is to minimize the fingerprint of the PC to you, as a user. Assuming one trust their VPN provider, helps.
Tor leverages the point of having all users look and be fingerprinted mostly as the same, so you get lost in the shuffle and crowd.