Generally, 2-3 pages are more appropriate, and one page is a letter of recommendation.
Don't make a long speech about the content of each section. If you are tired of looking at human resources, you may have passed.
Precautions:
Check your resume carefully, and there must be no low-level mistakes such as typos, grammar and punctuation.
Remember that your resume must highlight the key points. This is not your autobiography. Try not to write anything that has nothing to do with the job application, and never leave out meaningful experiences and experiences for the job application.
Make sure that your resume allows recruiters to judge your value and decide whether to hire you within 30 seconds.