When I am looking at the number of hours my nephew is spending hours on the Internet, I think that children should not be allowed to use social media so much time.

Is the concern here being online too much, using social media too much, or both?

Another way to say "on the Internet" is to say "to be online." It sounds a little more natural and modern. For example, "When I look at the amount of time my nephew spends online, I start to think that children shouldn't be allowed to use social media so much."

Nowadays, the children under the age of thirteen spend an incredible muchamount of time on the Internet.

In spite of this, pParents doeven allow their pre-teens to use even YouTube, Instagram or TikTok.

So,But what is the right age and what are the rules to let kids use social media?

Firstly, I have to mention the issue of privacy on the Internet.

You don't really enumerate other points in this post, so using "Firstly . . ." sounds a bit odd when you don't really separate points later.

If you want to emphasize this point, I might say instead, "The most important issue is online privacy."

Children can unintentionally blab privatet information about themselves and their family to scammers, w. That can become a threat to their health, financial well-being, etc.

"Blab" is a good word to use here.

Besides it, lots of others topicFurther, many other issues exist.

InFor instance, children do not know how to recognize fake accounts, and bots, what is mean; they don't know what constitutes cyberbullying; and they often do not understand the difference between real and virtual life.

Might be good to emphasize that these are issues that even adults have difficulty with.

On the other hand, many parents dream their child is wanted/ hope that their child might one day work in onthe IT world.

However, for pre-teens is more important to be a part of online community than acquire skills for your future profession.

The Internet provides children with an unique opportunity to gain knowledge, and to develop their mind,s and creativity.

Here's a little quirk: "unique" has a consonant sound of "yu" at the beginning, so "a" sounds better to the ear than "an."

Therefore, it is important how well adults prepare children to use this resource.

I might say instead, "Therefore, it is important for adults to prepare children well to use this resource."