Angga, you essay is well-written and impressive. You are very informative and clear in yielding some transitive words to address the reader smoothly, which will not escape the attention of the examiner. Amidst all of that, I also found minor grammatical mistakes in which it is also your plus point to reach a higher band score in IELTS Task 2. However, there is no perfect writing, I notice that your second body paragraph is a little bit too bulky. Perhaps, you can decrease one or two sentence, and then put it in your conclusion, because your conclusion still needs one more sentence regarding to recommendation, hopes, or fears in the future. Now, for a breakdown of your grammatical errors, with corrections applied.
that they are belong to high
that they belong
abundant advertisement in this digitalized era always succeed
abundant advertisements in this digital era always succeed
So, good work on the more complex vocabulary and kudos for a well developed report. I hope to see more enhancement with your upcoming essays. :)