Failing math means that the foundation is not very good. I suggest that at this time, you should focus on reviewing the basic knowledge, thoroughly understand the formulas, theorems and examples in the book, and then strengthen your practice to ensure the accuracy of doing the questions and strive for the points you can get in the basic questions!
In addition, you should also pay attention to adjusting your mentality. The score of the college entrance examination is partly determined by the mentality. There is still some time before the college entrance examination. In the end, anything is possible. Don't give up, lest you leave regrets for yourself!