Economic income: The class fees of counseling institutions are generally higher than the tutors they find, and special circumstances are not considered.
Time arrangement: Counseling institutions generally have their own arrangements, so you should obey the arrangements and don't change the time casually; Counseling time can be discussed with parents, and it is better to discuss it in an emergency.
Experience accumulation: In counseling institutions, the biggest advantage is that you can receive their professional training, communicate with excellent teachers, and constantly increase your knowledge and teaching ability. Of course, it is more difficult to substitute classes in tutoring institutions than to register casually on tutoring websites. There is an evaluation process.
I hope my answer can help you, because I have experienced both roads.