at casino, 80% odds is on house favor. I'm not really like to play at casino, even at landbased casino, i only play in slot.
That's funny!
You can't compare slots and roulette! With slots you just pres spin and of course, you adjust your bets, with roulette you have so many possibilities to bet on, starting from red/black, even/odd, to numbers that have higher payouts!
It's all about how you play roulette! I saw some people and their sense for playing roulette, how they search for numbers and place only number bets, to people who chase martingale with x2 and x3... Youtube is full of crazy roulette plays, take a look at them and you will see how interesting roulette can be!
Roulette is really funny and causes a lot of excitement (in a real casino), but if we consider all the variability of playing it, then in fact there is no difference on what and how to bet - the chances are about the same everywhere. The only difference is the rate of loss of funds - if you bet black/red then you will slowly lose, if you bet on a certain number you will most likely lose much faster even with good money management.