The easiest way is to use online text comparison tools, which compare texts side by side. You can paste both texts into the tool, and it will highlight the similar sentences or phrases.
This is called using automated tools, but you can also compare texts manually. You would need to carefully read both texts and look for similar phrases and sentences. However, this method can take more time and effort.
If you want to compare a text with a lot of websites or other writings, you can use a plagiarism checker. These tools check your text against a large database of texts to see if anything is copied.
Compare texts