Spun text does not sound very good. If you want to take this path, you can use Word Ai (the most expensive, probably the best), or Spin Rewriter. After you spin the text, review it and edit, before adding it to the site. Canonical url settings are good too. You are telling Google.com and search engine websites that it is duplicate content, you are aware of that, and you are pointing them to the original sites.
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