Why can't I edit files in a folder I created?

I created my own Program Files in my D drive for my own programs (not created by the system) that would take up too much space on the boot drive, and one day I was unable to edit my txt files in that particular folder. I've tried some suggestions I found online but I was unable to find a "take ownership" option. [Here's](https://imgur.com/sfp1C8r) a comparison of a neighboring folder's security settings, I don't know where these extra user groups came from but I'd like to hear advice before messing around with them.

For additional information, the only things I recall doing before this happened was changing "System>Storage>Where new content is saved>New Apps will save to" this drive, in my attempt to get gamepass to recognize my D drive as an installation folder, as well as installing a new version of Hwinfo.