Has anyone tried freebets on betting sites - is it really possible to win without investment?

I tried it. I got a freebet for registration and decided not to be stupid. I bet on a match with good odds, but I didn't take any risks. I did it on https://r2pbets.com/ - there are fair wagering conditions and normal odds. In the end I managed to turn free money into real money. The main thing is not to bet at random, but to take a calculated approach, just like with real money.