You are already in cryptocurrency and you should not regret it.
YES, the course is unstable. Sometimes there are mistakes, but do not look back. You will not change anything. It is better to assume that you made the right decision, even if you got a loss.
We need to move only forward, what do you think?
As long you can afford all of your losses from the beginning, you should not regret your action.
Cryptocurrency is unpredictable, so the good and bad outcomes maybe occurred later.
Looking forward is good, but look back to review what will be better next time is not a bad idea too.
Regret is not helpful in this situation as you should use all your energy and focus on your next steps.