The fact that you've gotten all races to gold, you've more or less got a grasp of the mechanics of each race and discover the common problems that u face using each race against certain other race. This gives u an advantage as you can exploit the weaknesses of each race u play against! And when the opponent manages to counter what your attempt to exploit his weakness, you'd have a chance to review your play and find a solution to the problems that you were previously facing whilst using that race!
Besides, you will not be always playing against gold level players due to the MMR thing. thus, you will have plenty of opportunities to learn and improve beyond your current skill level! Keep playing and dont lose your spirit!
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