For ALT price to be increased, you just need to keep an eye on the BTC dominance.
Dominance and BTC price aren't the signs to predict Altcoins price!
If BTC Dominance Increase with BTC Price = ALT Dump
This mean most people choose to invest in Bitcoin over Altcoins.
If BTC Dominance Increase & BTC Price Decrease = Major ALT Dump
This mean people taking out their money from Altcoins.
If BTC Dominance Decrease & BTC Price Increase = Major ALT Pump(ALT Season, ALT pump upto 100%-1000%)
This mean most people choose to invest in Altcoins over Bitcoin.
It's just a simple supply and demand, nothing else.
Altcoins can't be predicted because we don't know how many stupid people especially cash cows that want to invest in this scams.