Are you for real, friend? This is strange to me to be fair with you, every trader I've met in my long years of trading always says the same thing, indicators are meant to complement and not to be used as the main strategy. Even if you are calling out good indicators, RSI should not be among them because it's a lagging indicator among its pairs.
Again, RSI and Stochastic oscillators are overbought/oversold indicators rather than trend finders, while the Bollinger band is a good one if you know how to use it cleverly as it has too many misrepresentations on the chart that causes confusion. Maybe I should say that the market disregards it's principles of trading in a seriously trending market, so you enjoy it better in an indecisive market condition.
Well, indicators can be used as main strategy when you are trading top altcoins or Bitcoin and there's no need to rely on anything else if you know what you're doing. I think you're not understanding the power of RSI my friend, it's the top indicator that I use and so far it has been much helpful for me as a trader and that's why I won't stop using it even if it's a lagging one or not.
When it comes to Stochastic RSI, I consider it as good as RSI but I follow it with a different strategy and I must say that I have tweaked values of both RSI and Stochastic RSI and Bollinger bands and after that all of those indicators give me good results. I believe if someone is trading Bitcoin only then those 3 indicators are more than enough to have a high win rate.