RANK PLACEMENT !!

Hello !![sg-shisa] I've been ranked in silver 5 while getting 4 win in row and 3 win in row with 3 loses 7-3 placement While the last 3 season I didn't even play rank , and last time I played I ranked gold 4 What is that shitty noob placement that I get Silver 5 wile getting a good score in placement and was gold ?!!