Only practice CT side utility?
That's just not how it works... C9 went 9-3 on defense and 100T went 7-4 even tho C9 was the better team both teams got a majority of their rounds on defense sides. Also you can't just say a map isn't one sided "if you're good" cause then every map would just be sided towards the better team. Stats show u have a 10% higher chance of winning a round on defense which is extraordinarily high.