I keep all cookies blocked on the phone unless I actually need to visit a site that uses them for a purpose that I decide is required, e.g. a login function. Even then, after I have finished and while still on whatever website it was I block cookies again and delete all web content (the iPhone option, YMMV).
Not long ago things changed at Google making it impossible to access unless cookies were enabled. I reported this at https://jmh.one/index.php/2020/10/30/google-learns/. Now this seems to have been reversed and once again I find I can visit Google and the cookie warning / acceptance box appears and then vanishes. For a while now I’ve been using Duckduckgo for web searches but the Google cookie-wall-box did prevent me accessing YouTube for a while. So it’s rather handy that the cookie-wall-box has somehow changed back to performing it’s useful vanishing trick.
Of course, this may all be unrelated to Google, or perhaps I am hitting a different node now and there are configuration differences, who knows. But it’s a useful feature/bug nonetheless.