Why did OneDrive delete and replace my local save files?

[tasman95]

I got on my computer today and noticed OneDrive had wiped my documents folder on my local saved hard drive and replaced it with the random garbage I had accidentally saved in OneDrive. I never use OneDrive because I don't want cloud storage, even though it's been shoved down my throat since I've had a windows computer. Now it's rooting into my hard drive and deleting important documents that I need for engineering, finance reports, cost expense analysis, and many other things. Why has OneDrive done this and how do I fix this?