How to climb elo with support

HI,guys i need help .I need your advice on how to pick up the division. I play support and because of my role it is difficult to pick up the division. Please do not call me a rookie or something like that, but I want some advice. I always play alone without friends.My mains are {{champion:497}} {{champion:12}} .eventually I'm ready to try a new champs like{{champion:53}} {{champion:201}} {{champion:412}} {{champion:432}} but not{{champion:143}} {{champion:90}} {{champion:63}} .Thanks for help
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