2) A case - study: Yury V. Chekhovich, Andrey V. Khazov, Analysis of duplicated publications in Russian journals, Journal of Informetrics, Volume 16, Issue 1,
2022, Open access: Article Analysis of duplicated publications in Russian journals
Tanka Dahal If this is part of the review process, then it is possible to use EndNote or other programs to identify duplicates. If it is about publishing findings, then I recommend finding relevant journals to publish paper.
You could put your paper through a plagiarism checker. Some are free and some are not. It's definitely possible to inadvertently use the same quote twice.