probability involving quantum physics/mechanics

Not another one! You shouldn't think you can question a theory until you have actually taken the time to understand it.

You have made up your own understanding of the pop science that has nothing in common with the actual science except for a few terms in common.

i do understand it!, shrodinger hypothisised putting a cat in a box with an element that after an hour had a 50% chance of decay releasing poison and killing the cat and a 50% chance of living, and after an hour the cat would be in both states until someone looked. to demonstrate the copenhagen interpritation.
how can a cat be in two states? surely are eyes don’t affect matter in such a physical way.

It is an analogy to a quantum state. You realize it doesn't apply to an actual cat, right?

To understand the science, you need to understand the experiments, and the mathematical model, upon which it is based. That is how science works, you run experiments, and if you observe that a particle is in two superimposed states, than that is what happens no matter how odd it seems to you.

The double slit experiment is the most basic experiment QM explains. Try reading about it, and then see if you can explain the diffraction patterns (which are observed in high school science laboratories) without using the superposition principle.

Of course, Quantum Superposition has now been confirmed in many more experiments... in fact, the computer you are typing on right now depends on the superposition of states (in the semiconductors used to make the CPU).

The reason that Quantum Superposition is accepted by scientists is because it is observed.

There have been numerous experiments done now that can't be explained with just our normal intuitive understanding. There is, of course, a chance that there is an explanation we haven't thought of yet... but given that we have been working on these problems for centuries, the chance that any alternative explanation isn't more "weird" seem unlikely.

Scientists have had a "simpler" understandings that didn't involve the apparent weirdness of quantum superposition, but these simpler understandings simply don't explain what actually happens when you do the experiments.

So Quantum Superposition it is. If you think you know better, than you need to at least understand the problems that brought science to Quantum Mechanics in the first place.