How can I improve my SAT Score?

I took the May 2023 Digital SAT, and I`m not expecting a good result. I`m planning to take the test in June again.

I`ve done all the digital practice tests in the bluebook before my previous SAT.

I solved most of the easy and medium level digital SAT reading&writing questions on Khan Academy, but I can`t solve advanced level reading&writing questions, they are too hard for me.

I don`t know how to improve my score, and I must get better in the reading&writing section. I need your help and advice.