The disadvantages of quantum mechanics

At very small distances, quantum mechanical equations must be normalized by changing the initial constants.

The view that the field is independent of spacetime differs from the view of general relativity (spacetime is one), and therefore Einstein's view of quantum fields and gravitational fields does not unify quantum fields.

The biggest mistake of quantum mechanics is the quantization of the field. This is the root cause of renormalization and fails to explain how forces work.

In his book "The Universe is a unified object", author Ngo Quang Ha meticulously analyzed the shortcomings of quantum mechanics, thereby developing a new field theory to replace quantum field theory..

The book (in English) is available on Amazon: https://www.amazon.com/dp/B0HCGYPFK1