This is one of my common mistakes that I didn't make because I was moving from one trading strategy to another and looking for the holy grail. A magical trading strategy and indicator that will give me guaranteed profit. And the tendency is that we will try many trading strategies that we can find on the internet that are new indicators that are profitable, and if they are not profitable, we will look for something new.
Such an indicator does not exist. Indicators only indicate the movement possibility but does not confirm it. 50% cases it goes as the indicator goes but in 50% cases it might not. So this is not an exact science but a way or predicting the future.
Strategies dont need to change often. From what I have seen, stick to buying low selling high and setting stop losses. These three things if timed and executed properly will save a lot of money and allow you to make profit in between.
Along with this if you focus only on the big names preferably bitcoin you are more likely to profit.