Losing involves finding. Finding involves losing.
It’s because they are really not different things but the same thing. It’s the perception of the losing and finding that make them feel different.
Buddhists call these illusory feelings attachment. Christians call them worldliness or “being in the flesh.”
In any case, they are both just simply what happens, and a part of all that happens. They need no further explanation.
“All things happen for a reason,” only if the ultimate reason is, “Things happen.”