Thanks for sharing your feedback about the recently used documents. We are working on making this feature better in our future releases.Lance commented
I have to agree, It is annoying to have all documents displayed on your Landing Page. The ability to delete the unwanted items is essential. Microsoft 365 auto saves your document as document or some such title. So when you change the name of the document you get a display with both the original name and the name you really want. Please advise on how to delete the unwanted item. Right clicking it only gives you basic information and no way to delete or remove from the list.