while in live casino, like playing roulette there is 15sec gap in every spin, in that 15sec i can think something, or sizing bets and close my gambling session for that day.
and also live casino's dealer is front of me i can see we are cheated or not, but i don't know if they use rigged roulette or not.
I am not sure in which city you usually play and how big the casinos are where you enjoy Roulette, but if you are playing one of the large casinos then I wouldn't worry about cheating or rigged games. In most countries the gambling industry is highly regulated and there are government inspections that will check the casinos on a constant basis on how well their games are operating. Roulette by itself is already a game that makes a lot of money for the casino. The house edge ensure that with enough games there will a constant profit. It just doesn't make any sense for one of the big casinos to risk their reputation by rigging the Roulette tables. If the news would come out it would be a huge scandal and the casino would be ruined. Nobody would play again at a casino that rigs it's games.