Generally speaking, it is not particularly difficult to master a certain method of mathematics examination, especially the civil service examination, which takes a short time and has a large number of questions. If all the equations are listed, time is tight. If you can practice in some simple and direct ways, that would be great.
Of course, besides what you said, you can also go to some forums to communicate with other candidates. If you like video teaching, you can also consider YY teaching on some websites. Candidates or teachers often put forward very simple problem-solving skills to get rid of the confusion of your single problem-solving method.
PS: There are many solutions to every problem. It is recommended to master one or two. Too much will affect your thinking of solving problems.