Since both of choices have different
advantageousadvantages or disadvantageousdisadvantages
Advantageous is an adjective. Advantages is a verb. They have different advantages, hence they're advantageous.
First, I believe
Second, in my point of view
Yes, we all know that you write the whole essay based on your own perspective, so there's no need to state the same thing multiple times.
For example, when I was studying for the entrance exam of the university lonely at home
Did you mean when I was studying for the entrance exam of the university by myself at home?
I thought my
current knowledge at that time
current = something that are still exist until now. you talk about something in the past, that's not something 'current'.
Finally, I pulled it off.
Last, studying at home moves you to a sedentary life which will cause threat for your mental
I see that you have a lot of inconsistencies with your grammar. When you talk about the past, use the past tense for all of your sentences.
I hope this helps. Good luck! :)