Bannable to lvl up 3 accs at the same time (3o3-Coop)?

Is it bannable if u were to level 3 accounts at the same time in 3o3 coop and didnt bother anyone with it since ure alone in ur bot game? And what about adding yuumi to that concept as well? And how do i protect myself from being banned for botting even tho im not, because ive read that riots systems are quite aggressive
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