This is someone who only understands the surface and is not quite correct:

The reality is that any measurement is an interaction. Even in cases where there’s no obvious physical disturbance (like a photon bouncing off an electron) the act of determining the state of a quantum system is itself a measurement. Please take this at face value: a quantum system does not have a definite state until it is measured.

This is not a matter of incomplete knowledge or imprecise instruments. It is a fundamental feature of nature. Recent Nobel Prizes have been awarded for experiments that confirmed this point beyond doubt.

In quantum mechanics observation changes a system not merely because of physical interaction, but because the act of measurement fundamentally alters the system’s quantum state. It matters not a whit whether there is a classical physical interaction or not — the system is changed by the very fact of being measured.

I think maybe only a couple of thousand people in the world understand QM to the extent that it can be understood, and I am one of them.