I'm sure holding Altcoin and not panicking is the best solution for now
Panicking is a choice but inexperienced holders will definitely going to cause their own panic but holding altcoin isn't the best solution but holding bitcoin.
if you convert all your altcoins to Bitcoin or become USDT it doesn't guarantee you will be successful
Converting to bitcoin is a safer coin than any altcoin.
all coins experience a very severe decline now, everyone who recommends you to survive is people who have a very strong mentality and they have strong beliefs for success.
Settle your emotion for this period, you have to be stronger and learn while on this dip.