How to reasonably avoid these reasons for visa refusal and make the application smoother? We can only start from two aspects:

1) Be familiar with the admission requirements of British universities and related majors, locate them accurately, and choose the school and major that suits you, instead of blindly being cannon fodder.

2) Carefully confirm the application materials requirements of universities and majors, including academic materials and documents, and prepare them in strict accordance with the requirements. Don't reject them because the materials or documents are not up to standard.