I am a middle school teacher, in fact, many students have the same situation as you, because you have not been exposed to geometry in the process of primary school. Here are some suggestions for you:

First, memorize the theorems in books, including the process of proving them, because this process can help you understand the theorems thoroughly and help you remember them.

Second, do more exercises. You can pay attention to the details of every step in the process of doing the problem. Even at the beginning, you can consider the method of rote learning, because the theorem of your initial contact is also good.

Third, learn to apply the format and break your own logical thinking. When you can combine the two, you will learn geometry well.

4. Several key points of junior high school geometry: the judgment and properties of parallel lines, the law of angular bisector, the characteristics of isosceles triangle, the judgment and properties of similar triangles and congruent triangles, the properties of quadrangles, the properties of several special quadrangles and circles and the proof of related concepts. That's about it. Learn to pay attention to me Believe in yourself. Good luck!