Here you can find tuts How Can I Download macOS Sonoma for All supported Macs.
To download macOS, you can follow these steps:
Visit the Mac App Store: Launch the App Store application on your Mac. It can be found in the Applications folder or accessed via Spotlight search.
Search for macOS: Use the search function within the App Store to find the version of macOS you want to download. For example, search for "macOS Sonoma"
Click on the macOS version: Once you've found the desired macOS version, click on it to access its product page.
Click on the Download or Get button: On the product page, you'll find a Download or Get button. Click on it, and the download process will begin.
Wait for the download to complete: Depending on your internet connection speed, the download may take some time. Make sure you have a stable internet connection and enough free space on your Mac's hard drive.
Install macOS: After the download is finished, the macOS installer will launch automatically. Follow the on-screen instructions to complete the installation process.
Please note that downloading and installing macOS will typically require an Apple ID. Make sure you have a valid Apple ID to sign in to the App Store and initiate the download. Additionally, ensure that your Mac meets the system requirements for the specific version of macOS you intend to download.
Now you can use new macOS Sonoma