Plagiarism issue! Kindly provide a feedback

I recently submitted by project report, but it has been rejected due to plagiarism. I already read different doubts that were posted in the forum about the same issue. I get it that there are different sources through which one can get the reports. But the datasets are different (50000 rows) and the insights derived from it are different. I even mentioned in my report that i watched multiple youtube videos as well to learn how to do univariate and bivariate analysis. Kindly provide a feedback on what particular part was similar. Or just highlight the part that needs to be changed.