Is the cervical cancer prevention vaccine necessary?

Hello. As the incidence of cancer increases, interest in prevention also grows. Is the HPV vaccine now considered essential for prevention? I heard that getting vaccinated at a young age is more effective, so does that mean it’s less effective if received in your 30s? I’m also curious about how high the prevention rate is. Are there any side effects from the vaccination? Since I don’t know much about this, I have many questions.