Instead of buying high and selling low, you should buy low and sell high

So it seems like with the recent dip that many people are panic selling their btc and other coins. Many people bought when they saw btc was going up over recent months and surpassed 100k. But now they are selling because it dipped below 80k, That is not the way to make money my friends. You should actually buy low and sell high if you want to make profit. I know this is a really complicated ideology, but hear me out, when crypto dips down you should actually buy it, and if you want to sell you should wait until it goes up.