It doesn't get old that there will someone who would share their losses because they've bought at the top and sold at loss. It's a never ending story because there will always be newbies that cannot take their emotions when they see the coin that they've bought starts to go down.
Buying at the dip is what everyone is recommending but you shall know it on your own if you're going to look at it and all of us have proper timings on it.