How can I open or unlock PDF without password if I forgot it

Hi everyone, I have a PDF file that is password protected, and unfortunately I forgot the password. I really need to access the content inside, but I don't know what is the safest or most effective way to unlock the password protected PDF file. The file is quite important, and I'm worried about using random online PDF unlock websites because of privacy and security risks. What is the best way to help me open or unlock pdf without password? Also, does it make a difference if the PDF requires a password to open versus just restricting editing or printing?