Lower Rankings aren't that bad
If you end up going against people a whole division or two below you then you get to play god in the Mid lane (or whatever you main). As a former Silver 3, I'm expecting Bronze 2- Silver 5 placement (im already 0-2, joy). If I get placed in bronze and cant get out, then that means I belong there. Take this moment, that only comes around once a year, to re-assess your skills at league. Have a great day!