The thesis teacher in the final exam of the university will not check the duplicate, because checking the duplicate also requires software, which is very laborious, and sometimes the software still needs to be charged. However, you can tell at a glance whether you copied from a senior teacher, because the teacher knows what level you are and how advanced you are, and the teacher knows that you copied. I suggest you integrate more papers and write with your own ideas. You can't just throw an article from the internet to the teacher, and the score won't be too high.