Why I kicked out MS Office 365

MS Office 365 is the web-based version of MS Office (Word,Excel, etc). Its functionality is limited comparing to the original desktop version, it feels like MS Works I used 1992. But the worst, it is not possible to copy&paste between two documents in two different web-browser windows, no clipboard! A limited clipboard is available via browser-plugin only, but it did not work with Firefox on Ubuntu 2022.