Can't get Onedrive to stop running on my computers

I ended up finding a solution.  Unsyncing doesn't empty out the Onedrive storage and so it continued to mess up my Outlook email, even though Outlook said I had 15 GB.  Just 5 GB on Onedrive messed everything up.   I could see that information in Outlook by clicking on the gear, going to settings, Account and then Storage.  

I went to Onedrive.com and it showed me a bunch of files, but you couldn't delete them, only share.   I could open the file, but still couldn't delete it.  I noticed a little cloud icon up at the top, and I clicked on that and it told me where the file was at least.  So I went to where the files were and I moved those files to a thumb drive and got them off my computer.  Finally I noticed on the left hand side a menu item called My Files.  I clicked on that and there were my files that I could delete. I had to leave some, but took out probably 75%.   I thought great, finally, so I did that and I cleared out Onedrive, but no, it did not.  Storage still showed I was over my limit.  So I did a Google search and it told me that I had to DELETE the Onedrive RECYCLE BIN.  Once I did that, the storage went down to 24%.  Now I can use my Outlook without getting terrible threatening messages that I would not be able to send email. 

I uninstalled Onedrive on both computers, removed some odd Onedrive files that were under my C drive.  I should have nothing that would even allow Onedrive to work, but yet if I have a download in Outlook, it still asks me if I want to put it in Onedrive.  

Come on Microsoft, if someone Googles, how do I get rid of Onedrive, tell us how to do it.  I had numerous back and forth discussions with Microsoft and no one would help me.  Better yet, people should opt in, not have to opt out.   You know kind of like how you changed my email several years ago to Focused.  That is something you should have explained and I could opt in if I like, instead of putting it in an update.