If there is no problem with your English communication skills, you can go to the university website in the UK to learn all the information about the application.
In addition, the Ministry of the Interior also has all the contents of the immigration law, including all the contents of the visa section. You can get the guidance you need to complete all the work through your own contact.
But if you are not very proficient, it may lead to the failure of your application, especially the delay of your study abroad plan.
Generally speaking, the agency fee only accounts for one tenth or even one twentieth of the total cost. Therefore, novices generally suggest that you find a reliable intermediary to help you.
As for the problem of intermediary cheating, there is a saying that it is not a loss to shop around. You can go to several formal intermediary companies for free consultation, which will help you to distinguish which one is right for you.
If you have any questions, you can ask me.