There are two possible reasons: your macOS does not have the current OS version (Monterey) installed or you dislike the new feature in the latest version of Xcode.
Problems with updates are usually not caused by the version but rather the update process. You can learn more about the update process on Xcode support page.
If you still want to install the older version, you can visit the Xcode directory of older Xcode versions using the links below. Please note that the links below may not be the Xcode official page, and it may pose a significant security risk.