Firstly, thank you for keeping coming back with suggestions. Tearing my hair out over this and I appreciate the assistance.
I’m afraid I haven’t learned much about materials yet, so I’m not sure how I’d check, but here’s a picture of the settings I could find.
Having an entire side open leaves me with this. Looks way too dark to me personally, considering both “indirect lighting” scales are set to max.
Cranking up the intensity does begin lighting up my room, but leaves the outside totally washed out. You can see in the lightroom next door it’s bleached everything.