Old old news
Many years (decades?) ago I installed iTunes on a windoze system to record podcasts. Which it did quite happily for a while. I would then periodically move them somewhere more convenient to play back via my squeezebox setup. After a little while iTunes threw a hissy fit and decided that if I was nt playing the podcasts back (through iTunes) I clearly didn't need them so it stopped recording them. So I deleted it and have never used it since. I have an optimistic friend who has installed iTunes 3 or 4 times and purged it each time after it made a mess by re-arranging his music collection in undesired ways.
Onedrive I deleted soon after installing Win10. Along with most of the "modern" apps and the windoze store. Mind, I gather you can no longer do that on Win10 Pro so I'm wondering if it will rise zombie-like from the cat-fluff in the bottom of my PC.
Backups? Thats what NASs and suchlike are for.