Professional traders do not apply one strategy every time they trade to avoid the losing system, but what they do is always follow the rules and trends that are currently taking place by looking at the scaled charts. I do not refuse if there are people who want to apply the same strategy as long as they are comfortable in trading and make a profit, continue, but remember that market prices are very volatile, they don't always move the same as before, it would be good to continue the strategy used and add some suggestions guided by seniors by using techniques that have been tried before.
Using a single trading technique limits your experience and prevents you from becoming a competent trader. By employing several strategies, you will be able to determine which one is superior. I am confident that trading is a big risk, and whether you use one or not, you will most likely lose because it is volatile and you never know which one will pay. However, it is preferable for someone to use a different trading technique so that if this one does not pay, you can trade another one that will benefit you and yield a profit. That is why if you have professionals who are into trading for a long time. you should close with them they should be your mentor and you will enjoy, because they can't end a week without getting huge profit.
True what you said, not only limiting but it will make it difficult for them to develop and hone their trading skills. It is impossible for them to use only one technique in trading, having more or various trading strategies not only helps reduce a trader's risk, but also increases the trader's ability to adapt to gain profit or development or the techniques we have when we trade. And if one of the proven techniques or strategies they tend to be calmer in making their trading decisions, this could help reduce the influence of a trader's emotions, which are often a factor in causing errors in trading. Indeed, having a mentor can be one of the fastest ways to gain insight into trading, but it would be better for us to jump in directly to do it all because what the mentor teaches may be different or not in accordance with our trading style.