Advertisement plays a major role
... I feel the postive form sounds better;
Advertisements play a major roleSometimes it motivates people to buy more of the product which results buying in bulk instead of considering quality.
Sometimes they motivate people to purchase products beyond their real requirements such as buying in bulk volumes when there are promotions and discounts. In such events, people tend to give a lower consideration for the quality of products they purchase.Aware of the fact that fizzy drinks are unhealthy, people blindly buy these fizzy drinks
I wish you said this idea a little bit differently;
These advertisments influence the fans of those famous cricketers to consume such fizzy drinks irrespective of their unhealthy effects.