I’d place all of them over the desk, as they are too small/spread out to be impactful. Measure out an appropriately sized rectangle on the floor and play around with placement and there is lots of on line advice.

Suggest large art on the other wall.

Thank you for the suggestion! My struggle is that I’m not a fan of gallery walls :/

The items are too small and too far apart. thats why they look funny.

You basically have two small gallery walls already and for more impact/balance they would be nicer merged.

How about this?

Flank the two above the desk with larger one on the other wall. Center them on that wall.

As for the other smaller pieces, maybe they need to be hung other spaces in your home.

Above the sconce, below, or next to?

And should I love the other wall blank?

In your first picture of the corner with the wall-mounted light, floor mirror and desk-like table, I’d have no items on that wall at all. There’s plenty going on there already, most especially because of the mirror.

Use 3 or 5 of your largest items grouped closely together on the other wall.

I totally get your aversion to gallery walls. I can't stand them either.

On your desk wall, remove the picture with the blue background. Slightly lower the other picture. Leave the tiny box where it is.

I'd center the fan underneath the brown framed picture. Then try the blue black ground picture to the right of the large framed picture. If that doesn't work, then find another place for it entirely.