I need help connecting Firefox on my computer to Firefox on my mobile phone and syncing my data.

Hello, I need help with Firefox Sync. I want to connect Firefox on my Windows computer with Firefox on my mobile phone and synchronize my Firefox data between them. I already have Firefox installed on my computer, and I want to make sure that my bookmarks, passwords, history, open tabs, and other Firefox data are synchronized correctly. Please explain the correct steps to connect my devices and set up Firefox Sync safely. I would also like to know if I need to sign in with the same Firefox account on both devices. Thank you.