The Internet when used as a source of information, has more drawbacks than advantages. To what extent do you agree with this statement?

My essay:

Internet is undoubtedly one is one of the humankind's greatest inventions. It is often said that Internet has more bad influences on human than its benefits. Personally, I completely agree with this view. This essay will suggest two main reasons to support my opinion.

To begin with, Internet certainly has some information that may be false. It is extremely true that Internet is full of data which makes us confused. Therefore, when we want to find things related to our jobs on the Internet, it is a bit difficult to choose accurately, sometimes we are swindled out of money to buy information that is not existed. To illustrate, last year, my older sister spent all her money on a online English course and was completely tricked as that was non-existent.

In addition, Internet can make children become bad citizens and crimes in future. There are more and more kinds of videos and games that contain detrimental pictures and rude words on the Internet. Obviously, parents tend to use Internet so as not to be disturbed by their kids. They let their children use smartphone though that can make kids addicted to games and sometime imitate bad behaviors that are not suitable for them on the Internet. For example, it has been reported that a nine-year-old boy killed himself after watching a violent video on Youtube and was taken to hospital just then.

In conclusion, I strongly agree with the idea that Internet has more harmful effects than benefits on us and we should not spend our time too much surfing the Internet.

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I would like to receive some advice to improve my English ability. This essay certainly has a lot of mistakes I do not realize.