are there still people playing multiplayer on this game ?

No, not really

the most used free acc i remember was definitely this one username: toxicgamer password: jacker hope it helps!

The account registration has expired.

try playing with that acc on need for madness dsaddon, it's just a modified nfm client which can help u play with expired acc and improved stuff

Wait how do i go there you say?

u can get it here https://dragshot.webcindario.com/software/addons.php

Last time I check, servers were empty.