Altcoin season actually means that BTC has risen enough, and the market's hot money has nowhere to go, so it starts flowing into altcoins.
Strong altcoins can double or even multiply several times; slightly weaker ones can also match BTC's gains.
In fact, the core of altcoins is speculation; they are never meant for long-term holding, but rather to exchange for more Bitcoin through volatility.
So, the goal is clear; just focus on this point.