Although I'm not very good at trading but can't just use one indicator to trade, I haven't seen anyone who can do that. But I think using more or less indicators does not matter because each person will have a different mindset and strategy, we should not impose our thoughts on each other. The important thing we need to take care of is the profit that we can achieve no matter which indicator we use. If we are stable and profitable with our strategy, don't change it just because our strategy is not like others.
It's good as a trader that you should try all possible strategy available and choose the strategy that best works for you. We don't have to depend on any individual advice as what works for them and give them huge success mightn't work for us or work in a successful way as it did for the other individual. This is why it's necessary we trade ourselves instead of depending on trading signals as it gives us the opportunity to know what works for us best..
If by using one trading strategy you'll get a better results than when you combined trading strategies then only use one strategy and when that strategy stops working for you, you can change to a new strategy that you would have already tested and it works perfectly for you.
If you haven't found a strategy that works for you, you should try them all to find the one that works for you. But if you have found a strategy that can be profitable, then you don't need to try them all as it is just a waste of time and easy to confuse us.
But I agree with you, if our strategies come to a point where they no longer work, we need to change and update everything. The market is always changing, so we need to update and adapt to everything if we want to continue to exist in the market.
