As in sport the players tire but the spirit of the game continue to exist ,similarly investors are not to panic from declining prices of BTC as It will continue to dominate the crypto market in future ,so nothing to worry,prices if falls may rise again.Do you agree with me.
we don't stay here if we don't agree with you. Market will recover we all believe in that. But we don't know when will happen. It is most important thing is timing for all of us. Some of us need cash

I'm new to crypto currency and I can't tell the good ones from the bad ones.
Do you know where to learn such knowledge. Maybe some rating platform?

It seems that you are expert here
