Downloading a "highly compressed 500MB" version of Windows 11 is not recommended and is likely unsafe. A standard Windows 11 installation requires at least and the official ISO file is typically around 5-6 GB . Any file claiming to be only 500MB is almost certainly missing critical system files, security features, or contains malicious software.
Check out these guides on how to install lightweight or unsupported versions of Windows 11 safely: Downloading a "highly compressed 500MB" version of Windows
: Install the standard version and use tools like Microsoft PC Manager to clean up disk space and limit startup processes to improve performance. Downloading a "highly compressed 500MB" version of Windows