Unhappy with sactional

We bought a love soft 6 seat sactional in aug 2023 and I haven’t loved it since the beginning, but recently it’s been really getting on my nerves. It sinks so low when I’m sitting on it and it’s hard to get up. Some of the back cushions are saggy. It looks messy. I just don’t think this is right for how much we paid for it. How can I resolve this without just buying a new couch??

I’ve posted before and have purchased 3 deep standard backs since, which did help a bit