I agree. You've taken it and reported your score as many times as adcomms consider "normal," but I would prefer to take it four times and have a strong score to point to, rather than take it three times and not be happy with any of my scores.
However, I hope that you're trying something new this time, whether it's more or different preparation. Some people keep taking the GMAT without doing anything differently, hoping to "get lucky" and score higher, but this is a recpie for disappointment. Take it again when you're certain that you'll be able to improve your score.
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