Dollar Cost Averaging (DCA) is a concept not everybody understand, and that's why those who do stand to be at advantage to the mere Bitcoin hodlers. It is a strategy that requires one to have good knowledge about how to read charts and predict price movement. I once tried it back then when I came new into crypto, and it is a strategy that requires one to have enough patience if you really want to make profit and also bear in mind that our prediction at times may not go as planned but it's quite okay.
One strategy I have noticed to work well with DCA is you placing "limit order" to either your buy or sell order, or using a "Stop loss & Take profit" when the price reaches a certain amount