The best strategy is certainly to buy cheap and sell expensive, but unfortunately today bitcoin prices continue to fall, I buy when the price is above $ 10k and now I lose more than 40%, it seems to be difficult to get profit but I still hope to happen.
If I think it will be difficult if bitcoin prices will go up at the price of $ 10k, this time the market is red and it makes a lot of people suffered losses. You must have the capital to buy bitcoin at current prices, and wait for the bitcoin price moment to rise.