There is an optimal or close to optimal strategy. No one is going to reveal anything to you because such a strategy is priceless.
Using SL in all the trades is the best trading strategy for me because it protects my money when the market takes sudden moves against my position. It works well for me, but strategies work differently for every trader I think and so one shouldn’t rely on any blindly, rather make out what suits him the best and trade accordingly.
I completely agree with you. There is nothing like the best strategy for a trader. In some situations, a different strategy might work for you. So, it is better to try out a few so that you know which strategy you can use in a particular situation.
Because different strategies can work in different scenarios, you must try out different strategies on your demo account and find out which ones you can use as per the market analysis.