Hi Impact. I'm Greg, an installation specialist, 10 years awarded Windows MVP, and Volunteer Moderator. If you will work with me I will be here to help until the issue is resolved.
You need to uninstall any apps first you want to move to a new location via the Storage Settings, as it will not move them once they're on C: https://www.tenforums.com/tutorials/81680-move-.... This will not always work. Sometimes if the other drive is slower it will prevent them moving to avoid a speed lag.
But I would not try to move System files to another partition. These are best if they remain on C with Windows where they write keys to the registry.
What can move and not affect speed are the User folders. See here:
https://www.windowscentral.com/how-move-default...
This way if Windows ever becomes irreparable you can restore C from recovery media, and your files will be current and safe in their own separate partition. If they are left on C they would be dated from when the image was taken.
The best free imaging app for saving the backup image externally is here:
https://www.howtogeek.com/howto/7363/macrium-re...
I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to choose if I resolved your problem, I will keep working with you until it's resolved.
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