pokerstars and everestpoker also have tournaments forfree where you can play and earn money and start scalating tournaments little by little, I have a friend who earns a couple thousand dollars each money and lives only out of poker
though it's quite stressfull life, he smokes a lot and plays 9 tables at once.
Lol, you really think we are going to believe you? There is no way he is earning thousands of dollars from playing free tournaments. Others are saying they give like 1k sat to 20k sat maximum, which is no way near thousands of dollars.
Or probably your friend is abusing the free offer and probably breaking their tos by using multiple accounts to abuse their free tournament.
I am pretty sure he is playing for actual money, not free to play tournaments. There is too much luck involved in these free to play tournaments.
Also playing 9 tables at the same time sounds more like cash games to me than big tournaments as they wouldn't all start at the same time.
If you want to make money with poker you need to grind your way through low stacks tables - where you want make a few thousand bucks a months - or you need to have a big bankroll to be able to manage any downswings.