After learning the first, it is important to learn the second else you will be a trader with a strategy that should work, but no profit to show for it.
But, you cannot frame a strategy without knowledge on what is trading. So, I guess learning should be a preliminary need and if you are good at deriving your own strategy then I believe you must be too good on how to use a strategy and how to effectively use it. This is the reason, I suggest to go for your own strategy so that you do not need to spend time for learning strategy separately. Copying a strategy may fit on what you are mentioning about not fully utilizing a strategy.
since the market is more speculative than being more certain, expect that it’s hard to maximize your profits especially if you are still a beginner trader
Maximizing your profits is always challenging and due to this reason traders do follow the strategy of gathering multiple small profits to sum up higher than the losses. This may not be viable for everyone.