With a large number of products have been sold, many people complaint that they are always buying unwanted goods because of effect of advertising
.... I feel the first part of this sentence sounds a bit irrelevant. It sounds better without that.
The commercials fromon TV programs , radios and websites, keep persuading people to purchase certain products.
....good
It is the commercials that have become a motivation of purchasing rather than the needs to products.
... This is my suggestion;
In my view, it is the advertising that tempt people to buy things irrespective of their real needs.Firstly, even though the influence of advertising has been admitted by most of us, some of them do not realize they tend to buying something that is promoted by merchants.
.... you need to bring out the real reason here;
First, advertising techniques are based on influencing human psychology. Therefore it uses various tricks to attract the attention of people and promote them to buy their respective products.