The bottom or support line nowadays is around 8k, is where everyone has placed their buy orders. 10k is where the market founds it stable, meaning there is a little buying and selling.
every time that bitcoin price takes a dip there are people who place their orders way too lower than the real support line because they think this is a gambling game which they need to get lucky to win instead of using their logic to make a correct move and win based on that....