Can't get out of Bronze. (Help pls)

I'm just here for advice. I played a few ranked matches recently and they were all a failure. Like, its not that i do overly bad in these matches but it is that many of my team mates do not listen to me. After we get an ace, our team does not go and hyper%%%% mid turret, instead they go to lanes and farm or take baron and by that time the enemy team comes and destroys us. i know i shouldn't blame team mates and i know i'm garbage, so, i just need a little advice on getting out. like, all the vids on youtube say the same things over an over again like play simple champs and stuff like that but i'd like to know stuff that might have helped you guys get out of low divisions. thanks. ; - ; my
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