Get out of Silver :(

Hi guys, i guess this is the clasic " f my team .. i can t do it solo". How can i exit silver when i have a team that dosen't farm , dosen t def , dosen t play safe , goes 1v5 for kills .. In 80% of matches i win my lane ( top {{champion:80}} {{champion:58}} / mid {{champion:7}} {{champion:105}} or support{{champion:111}} ) , then lose because no one cares about dragons/buffs/farm/teamfights. Can someone help me with some tips or idk ? Thanks !
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