This is not the best criteria in choosing coins to invest in. Because they have low market cap does not mean that they will survive long enough to pump durin another bull run.
it's difficult to get benefits because 0 is very difficult and not easy, maybe you need a very long time.
Invest You need to choose really good coins to invest and do not choose carelessly.
indeed not all Altcoin can be profitable but at least you know the whole so you don't regret it later.