This is the guide to root Samsung Phone! Work in 2022!
The method works for any non-US/ Canadian devices. However, if you have US/ Canadian devices and your bootloader is unlocked, you can also use this method to root.
US/Canadian devices' bootloader unlocking: https://forum.xda-developers.com/t/an...

If you have any problem, please explain it with more details for me to help you.

Samsung Odin (the flashing tool of the official firmware)
https://technastic.com/wp-content/upl...

Samsung Android USB Driver for Windows
https://developer.samsung.com/android...

Samsung Official Firmware Downloader
https://github.com/zacharee/Samloader...

If the downloader above is not working, you can use the website below. It also has a great speed of downloading.

Check your CSC
https://samfrew.com/