A few months back I closed my amazon account, logged out and blocked the website from my searches.
Shocking how well this has worked. Right up until I needed to order some more Advil. Which I always bought on amazon and very few other online sources sell. When I did the search: just two results on the first page. All the rest were amazon.
They have a very bad monopoly on certain home-goods. I'm delighted to pay a little more to avoid them.
You don't really see it until you leave.