It's not only cookies, the richest companies have built spying tools such as Chromium based browsers, this is how they make money, they see what end users do to steal their ideas, then they build products based on their ideas and sell them world wide.
No matter how many security tools I have implemented, but you can't bypass 5G antennas, AI + nano particles in your brain, the end result they not need any browser, PC or smartphone for you to use, they have your brain on the plate, I tell you this because I m connected to their cloud everyday.
They send you worldwide what I do daily as suggestions and targeted ads, posts, emails etc, but they always skip the secret keywords from the suggestions, because it will destroy their businesses.