Usually through pump and dump.
This growing discord channel is dedicated to pump and dumps - probably worth joining, i've made +50% off their pumps
https://discord.gg/wn9PTRBFollowing some coins and looking at the period they experience some of their pump and dumps, even though risky, I have been able to more than quadruple my money in a little tile and started holding some real coins with what I make from those ones.
So far, holding LTC at the beginning of the year, some few of lower alts with good prospect has really given me some huge profit, not forgetting ETH and XMR as well.