Heads up that you can still buy perpetual licenses to Office either directly from Microsoft or through other sellers throughout the internet.
https://www.microsoft.com/en-us/microsoft-365/p/office-home-...
https://www.microsoft.com/en-us/microsoft-365/p/office-home-...
Not that I want to encourage people to keep using Microsoft products.
For the sake of conversation, though, there's SoftMaker Office:
https://www.softmaker.com/en/products/softmaker-office
But they're a subscription too. You save only $20 a year for less features than Office 365 as well (especially the lack of an email program). For most people, that savings and "no Microsoft" isn't enough.
> LibreOffice
No.