No, advertisement is just one of several factors that go into a purchase, and not the main one either. It is suggestion, not mind control. Again, if advertisers are doing their job successfully, you would think ads aren't built to appeal to your cognitive outlook because you wouldn't be able to link them with any specific behavior when they already are in your head.

The only way to be safe from ads' suggestiveness is to not be exposed to them. Any self-rationalization about their supposed lack of effectiveness is a win for advertisers.