Task: To upload and save files and folders to your OneDrive
Instructions:
Step 1 - Sign into Microsoft 365, open the app launcher, choose OneDrive.
Step 2 - Choose My Files from the OneDrive navigation menu.
Step 3 - Select Files from the Upload drop-down menu.
Step 4 - Navigate to the file(s) that you want to upload to OneDrive using File Explorer or Finder.
Step 5 - Select the file(s).
Step 6 - Click Open.
Note: If you have folders to upload, return to Step 3, and select Folders from the Upload drop-down menu.
Outcome: Your selected files/folders are saved and displayed in your OneDrive.
Further reading:
OneDrive: Moving Files/Folders from Dropbox to OneDrive
OneDrive: Moving Files/Folders from Google Docs to OneDrive