Like other Chromebook users I was disappointed when Microsoft stopped supporting its Office for Android apps on Chromebooks in September 2021. If you run one of these unsupported Android apps, you will see a message saying it is unsupported on the Chromebook and recommending the web app equivalent.
However, it looks like this support removal is for the core Office applications: Word, Excel, PowerPoint, and OneNote.
I found that Microsoft Teams, To Do, Outlook, and the all-in-one Office for Android apps still run on Chromebook without generating a warning display. the all-in-one Office app lets you work with Word, Excel, and PowerPoint documents on a Chromebook.