Bet adjustment is actually about the management of risk and emotions. Pursuing after losses through bets increase can be potential danger, because a single wrong turn can erase you. Increasing after a win may feel safe, if you will be betting with the profit, yet it can as well backfire when the streak stop abruptly. From my view, I will prefer staying with consistent bets with slight adjustment, because stability provides better chances of lasting longer to avoid tilt. The concern is securing your bankroll at first, not going after fast swings.
If gambling is only for the entertainment, then it is better to bet a certain amount. But if the gambler feels that he wants to take some risk along with the entertainment of gambling, of course, a large amount can be bet occasionally. Because the opportunity will not always come when it is necessary to utilize it. However, it cannot be ignored that if a gambler can survive in gambling for a long time, then he can definitely get lucky at some point. Above all, whatever advice you give when it comes to betting, you should make your decision based on your own ability.