Great idea, @LTT1 , to give us these to analyze.
#1. At least the person on Reddit had a sense that they needed help with this! I'd say this person has bohemian instincts, with an interest in "global" design, but in my opinion, they've tried to do too much in one corner.
The large object with eyes, might be a folk mask, or some other cultural object. It's too much for this space.
The three round objects on the shelf system don't work here either. The bookshelf is actually a nice, probably walnut midcentury piece, and it's nice with the books, plant and the globe on top.
I personally would not have that "graphic" of a rug, with all the other things going on. To me, removing that, and the other changes mentioned, would give a more calm, midcentury boho feeling. The green accents in chair, lampshade and plants could be punched up with at least one more green element.
#2. Modern desk area, pretty nice, interesting contemporary pieces. They don't necessarily need more symmetry to balance the flowers, but I might have a more substantial lamp than the brass one on the other end. That, or an interesting long, sculptural. low bowl on the desk, to hold pens, etc.
#3. Cozy layout for conversation, nice rug, great windows nicely dressed with shades. Good idea to have a sofa table behind couch, but too many small, undistinguishable objects. Choose maybe two framed photos, with compatible frames but noticeably different sizes. And, besides a lamp, maybe one - two other interesting objects that can be identified across the room-- not "ditsy".
Choose an accent color, perhaps pulled from the art work, and use it in pillows and throw. Choose 3 standout objects for coffee table, no more. Otherwise, an attractive apartment living room.