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We cant see that they are from pixabay and free ones, plagiarism is highly looked for on the blockchain, always give credits where credits are due.

When you have them from pixa just copy the link to the FREE image while you are searching it and put it unfder the photo as a link in your blog and you will be safe

Also i would do that wilt all the blogs younger than 7 days, they can still be downvoted and with all your future blogs

Alright thanks, much appreciated.