Will information be an "entity" that exists independently of matter?

This question, hehe, is really difficult. Like you!

Information is an entropy concept, and I don't understand it either.

In other words, disorder is the final result of the evolution of the universe, and order allows us to see the present universe, and order is information. As for why it is orderly and why information exists, it depends on your research results.

There are still many laws of physics that are not clear. At present, the law we see is not a law. At the very least, they must be explained from quantum to be regarded as some laws.

Appendix:: Maybe we should take the dimension into consideration in order to understand it better. When you say entity, you probably mean three-dimensional, such as protons, but the information is not three-dimensional, and it may be a high-dimensional entity.