Use the word television instead of TV.
There are two reasons to support my idea.
At the end of the first paragraph, give a sentence that sums up the MAIN IDEA of the essay.
I have one correction to add to what Mirela said:
As an example, I got too much stress from the school. So, I was quite aggressive. However, after I watched the...
In conclusion, of course, the television can have violent programs. However, if children can...
The word HOWEVER can be used at the beginning, middle, or end of a sentence. To use it correctly, however, you should look for some good examples to follow. However, not all examples you find on the Internet will be correct.