Because last night I watched CNN is making a report on how's report about the success of this beand. Because last night I watched CNN's report about the success of this band.

And also.. and listened to them as they explained the music market industrial,y, and how K-pop music affects the whole world. .. and listened to them as they explained the music market industry, and how K-pop music affects the whole world.

You can join up some of these sentences. Especially when you feel inclined to start a sentence with 'And' or 'Because'. That's a sign for you to make the sentence longer.

Now I realize K-pop is like the animate in Japan. Now I realize K-pop is like the animate in Japan.

I don't what 'the animate' is

The huge amount of money generatesd by purethe power of raw creation power. The huge amount of money generated by the power of raw creation.

Anyway, I just download all the BTS mp3. Anyway, I just download all the BTS mp3.

Did you mean you 'downloaded'? i.e. past tense?

Will listen to their songs and try to understand why they are so successful. Will listen to their songs and try to understand why they are so successful.

successful is the adjective, success the noun.