Sure enough, Members of our group are not really energetic and impatient to solve any problem we have. Also, I think Our members excluding me are really smart and knowledgeable even more than other people of the number of groups. Nevertheless, I don't have to hate them because we are family.

Sure enough, Members of our group are not really energetic and impatient to solve any problem we have.

-> I am sure enough that members of our group are not really energetic and patient to solve any problem we have.

Also, I think Our members excluding me are really smart and knowledgeable even more than other people of the number of groups.

-> And also, I think our members, excluding me, are really smarter and more knowledgeable than the other people from the other groups.

Nevertheless, I don't have to hate them because we are family.

-> Nevertheless, I don't have to hate them because we are like family.