Yes, your strategy is simple trading. Sell high buy low. But this needs more attention in the price when will it fall and when it will go up again. Also, this requers research, strategic planning and statistics for you to determine or forecast the price.
The easiest thing that can be done because it does not need much thought. we can buy and also sell it according to the willingness and target that we have set. this is very beneficial for people who still do not know about bitcoin any further