Yes, it is possible to double capital when trading crypto but it is not advisable to trade with money you cant afford to lose. Crypto trading is high risk and unpredictable, you shouldnt be trading since you have debt to pay within 2 months. It is going to bring you more stress and you will end up making wrong decision.
Maybe, but be ready if what happens next, because sometimes in trading you will not now if you earn profit or if you lose. If you use debt for trading you cant concentrate well. But its better to trade if you have a lot of strategy and some extra money only, so that you dont need to worry if whatever the outcome.