It is nott about luck.
This is basic stuph.
Investing 101 or, more appropriately, Remedial Investing 099.
Nonetheless, there will always be some who are refractory to learning. That is a shame, butt sadly is reality. This is why many pennyvestors do nott break the addiction until they hit divorce, bankruptcy, losing their home, or even more sadly suicide, when the accumulated pennylosses break them.
I've been studying pennystocks and pennyvestor behaviour for four decades, and it is a long, sad tale of woe for them. And I see it repeated over and over and over again. It is madness. Only the victims' names change. Such a shame. So much wasted and destroyed capital. We all suffer as a result of this capital misallocation and wastage.