while you may not earn consistent profits over the short term, over the long term the superior traders must win more often than not, this is similar to what happens when a really good team faces a bad one, can the bad team beat the good team any given day? Of course, but if they were to face each other a lot of times then the good team will beat the bad one most of the time.
because the bad team mostly think like this:
if they face losses between some wins and lose in something like 2 trades consistently, which causes them to increase leverage take high risk to quickly recover that loss in short time.
Most traders don't have enough patience to wait and recover lost amount slowly, they try to recover loses in one trade and eventually following this pattern they lose more and more in the end.