While Windows 7 is obsolete for daily driving, a QCOW2 image under KVM provides a safe, isolated sandbox for legacy applications. —the few minutes spent installing from a clean ISO can save you weeks of malware cleanup.
Since Microsoft removed official links, you can still get ISOs from these sources: How to Download & Add Windows 7 host in Eve-ng windows 7 qcow2 image install download
and disable unnecessary services if using a pre-built image. While Windows 7 is obsolete for daily driving,
— they frequently contain ransomware, keyloggers, or botnet implants. or botnet implants.