What question?I prefer saying the plain truth that our best theories cannot answer this question.
The explanation is the math of QM. Not interpretations. Interpretations don't predict what happens; they just give some people a story to tell after they have already calculated what happens using the math of QM. But the story is not the physics; it's just a crutch some people appear to need because the math of QM and its successful predictions aren't enough for them.just give me an explanation that does not make me feel insane when I talk to somone and say "look it was a wave but because I watched it the wave collapsed and it became a particle".