My mates lost a ton on Roulette the last week. I walk in, slap £1 on 3 and it drops, two days later. £1 on 12, it drops. Thats how you play it, not scatter £50 and then lose or win and just lose in a few spins. There is no way to win long term, its a mugs game. I put a £1 on a random number every now and again for the fun not to try make money.
Poker is 90% skill IMO, the only game in a casino I will play as the house doesn't have an edge. Apart from the rake.