Living in a city is totally different from
living in the countryside.
The percentage of the world's population domiciled in cities is increasing and because ofthis
...You have not yet told us why people choose to live in cities.... so you need to slightly rephrase this sentence :)
Being aware of the nature of their daily lives there as well as the problems they face make them wish if they could live in the countryside.
This sentence does not deliver your idea clearly.
I can see you have very good vocabulary and grammar. However, you need to arrange your flow better to have your ideas well bonded with each other :)