Welcome to the forum.
AOO does not have a "delete file" command per se. Here are three ways of deleting files:
1. While using AOO. Go File > Open ..., or File > Save ..., or anything which opens up a (Windows) File Explorer pop-window. Navigate to the file you want to delete. Press the keyboard delete key or right-click the file > Delete.
2. Using Windows directly. Open File Explorer (or My Computer). Navigate to the file you want to delete. Press the keyboard delete key or right-click the file > Delete.
3. Using Windows Search. Start > type *.odt in the
Search box. Click
See more results. Scroll to the file(s) you want to delete and highlight one or more. Press the keyboard delete key or right-click the file(s) > Delete.
If you delete something by mistake click the
Recycle Bin icon the desktop. Find the file. Restore it.
As a new poster you will find much useful information in the
Writer FAQ, the
Writer Tutorials, the up to date
Writer guide and the
Writer Manual. When a pop-up window opens, click the Help button for extensive help on that function - it is often more comprehensive than the manual.
If your problem is solved please view your
first post in this thread and click the Edit button (top right in the post) and add [Solved] in front of the subject.