I think I had mentioned this in one of my posts, of what a team truck driver/friend had done on the roulette wheel on one of our visits to a casino and a couple times after the first visit;
He bought a $100 in chips right in front of me, layed down some of his chips on some numbers, after looking at the number sign that shows the last sever numbers that previously showed up.
He won some money back on the first spin, but lost a little too. He tried it two more times, on the same numbers and quit with double his buy-in amount.
Yes, he walked away with $200!
The other two or three times we had stopped by that casino, he came out with maybe $20 over once and I think he may have lost about that much one time also.
I think you have to know a little about the roulette wheel odds are and which numbers will come up on the wheel before playing it, or just throw you chips out there and hope for the best outcome.
I did notice he liked playing the four corner bets a lot, if that helps some.
You could try playing for free online first and see what works best before trying the real thing.