Talking first about compound price dump. Its nothing new because most of the time when a coin gets listed on Binance it would most likely dump before it do rises but depending on the project
if it able to get such demand but we know that getting listed on Binance isnt easy which basically means that Compound does really have it. There would always be a sell-off and its no surprise thing.

About leverage then its already being explained above but heres some tip that you shouldnt get involved with margin if you dont know on what you are doing.