The safest way to obtain the update is directly from Microsoft's official repositories to avoid malware from third-party sites. Update to Windows 7 SP1 for performance improvements
Windows 7 Service Pack 1 (SP1) is a critical update that bundles previously released security, performance, and stability fixes into a single installer. While Microsoft ended official support for Windows 7 on January 14, 2020, you can still find the 32-bit (x86) version of SP1 through official archives for those maintaining legacy systems.
