"Only managed DLLs are bundled with the app into a single executable. When the app starts, the managed DLLs are extracted and loaded in memory, avoiding the extraction to a folder. With this approach, the managed binaries are embedded in the single file bundle, but the native binaries of the core runtime itself are separate files."

https://learn.microsoft.com/en-us/dotnet/core/deploying/sing...

For """embedding""" native dependencies into the binary without self-extract, you can't really do that, the closest alternative is statically linking them into AOT compilation instead (but that gets tricky with large dependencies).