i would say use the last of your funds and try and ride a alt coin Pump
alternatively take the L and move on
sorry to hear about your mistake but i am sure you wont make it again
I also have a friend wipe out his money this day using margin trading. That 100x is not easy to happen not all is lucky enough to win that % amount , and for my suggestions you already experienced to lost big enough in margin so don't do this again its better to trade normally so you will not lost big for every trade you do.