Can you play Roulette professionally?

So, I hear that because of the house edge, in the long run, the house always wins. However, I’ve read blogs and stories about people who say they can beat Roulette and make a living. I think mostly through “Kesselgucken”. Now I wanna know if this is possible. Have you ever heard of someone who can win at Roulette in the long run?
PS: I knwo all the systems and that they don’t work, so i don’t believe in these.