As we can see since few days btc is mooning and alts are also going up for some 10-20%.
i see red all over the altcoin market so i am surprised how you think they are going up 10-20%!!!!
go check your Binance (or any altcoin exchange you use) and you can see that if you for example had 1
BTC invested in altcoins that is now worth at least 0.75
BTC!
Now the question is what should we invest before rest of alt will moon when BTC will start to be stable/decresed like always ?
if bitcoin goes down then altcoins will go down with it just like 2018.
if bitcoin becomes stable is the only one that the alt coin market can shine. we had the good example a couple of months ago when bitcoin was very stable in $3k range. many altcoins got pumps as big as 100% per day.