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Are you cannibalizing your own website for the same keyword? If so, it simply means you are being your own competitor.
And, you are trying to outwit yourself to rank on Google's SERP. Thus, It's of prime importance that you identify this keyword cannibalization and eliminate it.
If you aspire to rank high above the rest and strive to be the best, then all you need to do is check out this blog on 4 Effective Ways to Eliminate keyword Cannibalizationand learn ways to bring about organic growth by fixing it.