I you just want to play a few faceit matches than free is totaly enough
Faceit is broken, many skillful people on level 5 and many BOTS on level 9. Its simply awesome.
i played premium for 1month then tried free, its just unplayable so many shitty player in free, people are more toxic,racist and staying afk after a few rounds
premium = meeting pros and streamers, less russians, a bit harder games as the opponents are better
free = at least 2 russians in your team every game, once you hit 10 lvl there is nothing that should keep you in the free queue as premium is better in every way i believe