My issue with the orthodox interpretations is not that they are random but that they contain miracles. This was John Bell’s original criticism that people seem to have forgotten. The Copenhagen interpretation says that there is a quantum world until you measure it, then a miracle happens, and you have a classical result, but it does not tell you at all how this process actually works. The Many Worlds Interpretation, which is the second most popular, just denies that the classical world made up of observable particles in 3D space where experiments actually have outcomes actually even exist and posits it’s a grand illusion created by the conscious mind, but also cannot explain how this illusion can possibly come about and just vaguely gestures to it having something to do with consciousness. They just punt the miracle over to neuroscience and ultimately do not answer anything either. A lot of people think Einstein wasn’t the biggest of quantum mechanics due to the randomness, but if you actually read his works, he was clear the issue was that it does not give you a coherent complete picture of reality, so he just thought it was incomplete, an approximation of a more fundamental theory that we have yet to discover.

Well, there’s not really any randomness, we just can’t ever have enough data to determine exactly what will happen. Which is why we have the Uncertainty Principle. If we both had a functioning Grand Unified Theory and total knowledge of all the particles in a system, we could simulate what would happen in the system with perfect accuracy.