Adjetives and jobs

I think a waiter´s job is rewarding because they khnow a lot of people.
In my opinion, a teacher is not valued in Spain.
A bussinessman´s job is very well-paid but they sometimes doesn´t make good their job...
In my opinion, a teacher is not valued in Spain.
A bussinessman´s job is very well-paid but they sometimes doesn´t make good their job...