How to properly set up dev and staging branches on GitHub, and what is the best practice to use them in a project?

Question

I want to create a clean GitHub workflow with dev and staging branches. What is the best approach for setting these up and using them during the software development lifecycle? How can I ensure that each branch serves its purpose effectively — for example, dev for new features and staging for QA testing before going to main or production? Are there any recommendations or tools in Azure DevOps or GitHub Actions to manage this branching strategy better?