It all depends on the volatility here. If you invest $1 a day, the volatility is not too noticeable. And the whole question is when you invest. Maybe this altcoin has already peaked. When investing small amounts, risk management is usually not followed.
Well when it comes to altcoins things can get interesting, because generally an altcoin is very difficult for it to rise in price, generally altcoins depend directly on bitcoin, and unless bitcoin is in an uptrend, it is the best time to buy altcoins, because if the trend continues, what it will do is make the altcoin multiply its value, and 1 dollar can even reach 10, and if by chance you trade, and if it flattens out, then things become more interesting and you can bet more to earn more, but if and only if when you are sure that the trend is bullish.