3) I sold my bitcoins in loss, what should I do?
This is the funniest thing 
If there were a question like this, I will answer:
enjoy your loss LOL
It's not that I don't feel empathy, but yes, what else should you do if you sell Bitcoin at a loss? Shouldn't we sell it at a loss? Why should you panic and not just hold on?
But after all, everyone has their own thoughts and also different emotional control. In this case, if panic strikes, then there is a possibility that they will choose to sell it even at a loss.
However, in crypto space you should remember; you are not at all in loss if you have not sold any of your portfolio.
This is the point. Except that we are holding shitcoins that head to be dead coins