Who knows?

These are typical days here on crypto and yes these pumps and decrease are somewhat big on particular days and there are several reasons like adoption news most likely and some days are just random pumps without everybody knowing on whats the reason.

One of the hardest thing on why people do really struggle on dealing with this market due to moving prices in random behavior.

Your experience will be the key for you to sustain on this field.
if not then expect loss even though its inevitable but somewhat can be handled.