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What can I do if I have low rating

Stop plagiarizing user content. You got a lot of warnings from @cheetah to be well aware about that.
Original, high quality content is appreciated on this platform.
If you can't create one it is unlikely to be rewarded as an author (but you can still curate - most people wouldn't be great content creators anyway).
If you take shortcuts and copy content from others, you will very likely be downvoted and your reputation would drop - as it happened.