this is a precious experience for you right here.
next time don't bag hold altcoins taht are in a bubble and will get dumped hard as soon as the whales find an opportunity to exit. try and look for coins that have been getting pumped and invest in those instead of mindlessly holding on tight to certain "names" that are big.
I dont really know what happen because i saw the red from morning.
I thought its normal beacuse of price volatile and no need to be panic at all.
From your point, you said that better we invest in the coin which has been getting pumped, so how do we know if the pump just starting or will be finish soon? Its no difficult and this way we normally stuck.