I bought 3 btc on credit for 19k about. What should I do? I am way underwater.
You don't have any choice, you already lose a lot so maybe it is better to just hold until bitcoin will recover more and hit another ATH's this year. Having a patience can make you profitable in a long run.
You invest here and expect to make easy money? Bro you lend too much just to own bitcoin that means you study well on how this market works or else you will feel like that. Hold on it, no way to turn back don't make a decision right now cause you will surely broke. Be more patient and bitcoin will bounce back on time.