Not appearing One drive Icon in File explore on my computer

My Onedrive is not showing up in the navigation pane of File Explorer.
I’m using Windows 10 on my Macbook Pros.
Windows 10 is installed through Parallels Desktop 15. As far as I can tell, this is irrelevant.
I’ve installed Windows 10 on my machines, I’ve downloaded the latest version & am signed into one drive on it.
I can access One drive through the app on my computer, but I can’t see the one drive icon in the navigation pane of file explorer.
I’m using the latest version (all updated) of windows 10 and one drive.
I just discovered this morning that the computer that I’m having the issue with did not have the ‘White’ version of one drive on it, just the ‘Blue’ version. So now have both (SharePoint & OneDrive for business). I don’t understand what the difference between those is, but I’ll research today. Can they even co-exist on my computer? I know there aren’t even ‘Settings’ for the one drive app, only ‘Settings’ for the OneDrive for Business. I have selected “all files” in the settings on my computer.
Thanks for any help anyone can offer.
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