Hair loss

I’ve had a lot of issues with my hair thinning over the last few years. It’s not coming out in clumps but just seems to be falling out more rapidly. Especially during showers and right after when I brush. Additionally, now my pubic hair is starting to thin as well... I’ve seen lots of different types of doctors but no one really seems to have an answer. Has anyone struggled with anything similar? Or have any advice/products to recommend?