A5. It's not recommended to do so as downgrading to the previous version may cause stability issues with your Mac.
Upgrading to a new operating system may seem daunting, but downloading and installing a new operating system on your Mac can be easy. By following the instructions provided in this blog, you should be able to download and install a new operating system for your Mac with ease. And remember, always back up your important data and files before undertaking any significant changes to your system.