Your nostalgia isn’t worth a ransomware attack.
For the , install the original on a vintage PC or VM — but don’t connect it to the internet. If You Absolutely Need Old Microsoft Office Legit way : Buy a used copy of Office 2000 on CD from eBay or a thrift store (usually $5–15). Install it on an air-gapped Windows 2000/XP virtual machine using VirtualBox. Keep it offline.
Instead, grab — it runs from a USB stick, opens any modern file, and costs exactly $0 with zero malware.