It is really difficult for an altcoin to pump without the help of bitcoin, most of crypto investors also use altcoins to accumulate more bitcoin. However, I also see some altcoins significantly pump without the effectiveness of the price of bitcoin i.e: EGT , they pumped ~ 200x as I remembered, but I think that just pump and dump strategy from their devs. In overall, I dont think altcoin price can be increased as long as bitcoin is still in its downtrend