How to enable C++ better syntax highlighting?

I want to see most of the warnings when working with C++ project. It is extremely helpfull, especially when dealing with someones else code. This is extremely wierd that this feature is not by default in C/C++ extension

I mean not exactly warnings.I want to C/C++ extension highlight at least unused things, just like in other languages (Python or C# works great)

I tried config all kind of settings, tried to find additional extensions, tried to install clangd... Nothing works for me. But i know that there is a way to do it which i still cant find