any help appreciated

I never have really modded before but am very interested and even fiddled around in game engines with tutorials. Hard for me but still modding is definitely a big interest I have passively. I also got skyrim wildlanders to work (formerly ultimate skyrim) back in the years. But my memory how I did that is forgotten.
All I know is there was a readme/guide I followed and had to pay like 5€ for faster downloads
Now, I want to mod the Oblivion remaster (heres the mods Id love to try Mod 1: No-HUD , Mod 2: No Compass, Mod 3: Color Reshade
Id be so happy if theres anyone here who could help me answer some questions:
GamePass C:XboxGames issue
I also am on GamePass which installed the files to C:XboxGames - one readme tells me to put it into "common>steam>oblivion", but theres 2 oblivion folders (see screenshot, one in adress bar, other seen in main list) - So what folder?

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The other two mods have an .ini and the other one a small instruction to place files in "\OblivionRemastered\Content\Paks" - so every mod is different in installing, how do I install these mods (like the ini) - is it enough for the 2 of them to follow the description? What about the reshade one ("ini only") ?
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Also is it even safe to mod like this on xbox app PC, like is online connectivity safe?
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Do I need to back something up beforehand? game downloaded all day.. would be painful to do that again
Hope youre having a good time all, and thanks for reading in any way.