Even if you find a copy, Microsoft Support notes that you must have a valid product key to activate it. Some users have reported issues where product keys are flagged as "used too many times" after hardware changes. 2. Technical Compatibility (The "32-bit" Problem)

If your Mac is running macOS Catalina, Big Sur, Monterey, Ventura, Sonoma, or Sequoia, Office 2011 will not run at all unless you use a virtual machine like Parallels Desktop . 3. Modern Alternatives (One-Time Purchase)

Apple dropped support for all 32-bit apps starting with macOS Catalina (10.15) .