Watch this video by Google to learn what type of duplicate content you can report
You can find more by clicking see more products that you can report for duplication. If you want to reach above page directly then visit.
If you want to report duplicate content on specific platforms then you should request for specific topic from above image, for example, reporting duplication on Google search, click Web Search option from above image and you'll be moved to below page, now choose your relevant option.
If you want to directly fill legal requests through form then try below forms -
- Copyright infringement reproting form for Google Search
- Copyright infringement reproting form for Google Photos & Videos
- Copyright infringement reproting form for Image Search
- Copyright infringement reproting form for Blogger
- Copyright infringement reproting form for WordPress
- Copyright infringement reproting form for LinkedIn
If you want to protect your website from copying then you should add DMCA badge in your website.
If you want to keep an eye on your content then you can try Grammerly and Copyscape for duplication and pliagrism.