I was working in a tool to detect N+1 queries in Django apps and now I think is in a good state to be used regularly. The tool has two modes of usage, run directly in CLI to analyze a whole Django project, or as an LSP, this can be configured in your editor, and I just made a Visual Studio Code extension to be installed easily. I expect that can be useful for you, specially if you are learning. I'll continuing improving and manage more edge cases, then feedback will be very appreciated.

I also made a VSCode extension if you want to use it inside the editor: https://github.com/richardhapb/django-check-vscode