In my opinion, for altcoins that have been tested and have strong fundamentals, it is better to invest in the long term. However, for altcoins that are still new, it might be better to just invest according to trends because we don't know what the prospects for these coins will be in the future. It would be very risky to invest long term in new coins, especially since recently many new coins do not have good potential even though market conditions are in a bullish season.