i am a little bit confused what is better finally? Can also a moz expert give us his/her opinion

thanks in advance

i would like to ask if it is a good practice or not to Include Site Name in Page Titles.

My page is not selling products it is about plagiarism checker tool. i will give one example in one page we are writing about the plagiarism types so the page title is plagiarism types and then is the site name.

what is the better practice? Keep it or not?

thanks in advance