I have content in which there is 20% plagiarism kindly suggest me any tool that can help me resolve this issue.
What does it count as plagiarized? I know Turnitin often counts citations (which should be identical between papers if people are using the same source) towards the plagiarism count. Also, it counts direct quotes (even cited correctly) towards the plagiarism percentage. I don't think there's really a better tool than just a site that checks for plagiarism because any site that automatically corrects it would make the paper not your own work. Try using synonyms, making sure your paper is in active voice, and checking to make sure you're quoting sources when necessary.
If you know the content well enough, try abandoning the piece (without reading through it for a while) and rewriting your interpretation of that content. This helps to paraphrase and get the meaning across without being stuck on using certain words to express this idea (because it's not in front of you.) It's important to have not read yours or the article you might be using recently because only those specific words to describe the meaning naturally come to mind. Hopefully this makes sense, it's a tip that my teacher taught me and I use it a lot.
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