One can see OP is inexperienced. Unless you want to be a short-term trader, you shouldn't care about these one-day swings.

If you have Bitcoin, hold. If you don't have Bitcoin or don't have enough, buy. And then hold. The people who have made the most money on this forum are the people who bought and hold. Hold, hold and hold for a long time. The longer you are able to hold the more you will earn.