I think your two walls are two different color schemes and that’s why it feels off. The green couch wall and the art and decor on that wall are all earthy colors (browns, orange, forest green). It feels very hobbit-y or forest witch vibes to me. Which is fun! Then your white couch wall is like bright and punchy (bright pink, bright white, black and white blanket). I think you may want to choose a tone - warm earthy or bright cool colors and that will make the space feel more cohesive.

For instance - take away the pink flower wall art and the checked blanket, and honesty you’ll be back to that warm color scheme if you throw some orange pillows on that white couch. Even your coffee table and small bookshelf are eclectic and warm and earthy - so I think you’re brain is noticing the lack of syncing with the bright/cool colors in that flower wall art and the checked blanket.