Changing strategies repeatedly isn't easy, and even percentage-wise, it's not profitable. I've tried it before; it actually makes gambling worse. At the very least, we only need to consistently try one strategy until we truly realize it needs to be changed.
Changing strategies is actually quite necessary in any form of gambling. In certain situations, we need to think quickly to change strategies to maximize profits or minimize losses.
In gambling, I've tried many strategies, and sometimes we need to change them even when we're in a winning position. That's the way we gamble, and it applies to all gambling games. We need the right timing and speed to assess the situation and conditions before implementing a strategy.
It's better to stick to one strategy because the truth is that there are no perfect strategies that can always work... switching to another strategy might just be another succession of failure...like you said, we only need to try out one strategy and one way to make sure it's a solid strategy is if you manage your risks properly with it... risk management is the ultimate thing to look out for when developing a strategy