If you unfollow everyone you don't see ads ever again.
You just have to visit your friend's profiles one by one (or whatever group of friends you have created) to see their unaltered feeds with no ads.
Honest question: how many of your friends are still on Facebook? I remember it being wildly popular when I was in college, but since then, I think that only two of my friends still have accounts.
I haven't checked recently, but last time I visited the site there were some ppl that is consistently posting high quality content, but it is like 5-10%
You can also use FluffBuster. I never see ads ever. My Facebook page is a very stripped down news feed.
I use that web browser add-on and I set it to not show things people share and like so I only see what my friends post themselves. It's a much better experience.