What do i do when this happens

ok so in lobby this guy wants to trade so he picks me rengar. i pick him yasuo. we go to trade, his client bugs and cant accept, im stuck as yasuo jungle. then i get bug splat so i get in the game late. the other team is bm and just kills me immiediently the guy sucks at rengar and i suck at yasuo, our bot lane was also horrendous only good one was top. We lossed, kinda sucks i lose lp cause riots game bugged so i couldnt trade and then i got bugsplat. #Bronze4Ever