You need a lot of technical knowledge to do this. You would first need to be aware of Google Analytics (which most people aren't), then know how to block it. Then you'd have to realize how Google Ads on various web pages you visit work. That they're not just something that is "broadcast" to you like a TV commercial or a print ad. (That's what the average internet user thinks.) Then you'd have to know that Google keeps information even about the searches you perform. (Again, we know, but most people have never heard the term 'cookie' or know what it is.) Not knowing what all this is, that it even exists, how could you make a decision to avoid it? (And we haven't even started talking about Google storing and indexing your personal mails, chats, documents,... to add them to the above mix.)