Is there anything I can do?

I bought a house in July last year. Major problems have slowly made themselves known over the past months. The attic had a rat infestation and the entire insulation needed to be replaced. The inspection report was very misleading, showing two droppings in the photos and completely missing all the stained disgusting insulation. I contacted my realtor about it and she said there wasn’t anything I could do.

Now, this house also has an older pool. My realtor said that I should be able to have many years with this pool before needing to have it renovated. But after contacting a pool company they let me know I was filling it up way too often. Long story short there’s a leak. The owner had to have known about this if he was also refilling constantly. There were also spots were there was shitty diy on the pool, probably to “fix” the leak himself.

Do I have a case for anything? The seller had to have know about the pool and didn’t disclose it right? I feel foolish trusting my realtor (who *was a family friend). She ensure me on so many red flags. Now I’m drowning in repairs that I can’t afford.