Balance the lp loss when your ranked is 3v5?

I just had a second game where my team was 3v5, first game one left early, one late. Second game toplane left, adc left. So im here in my game with jungler, support and me as mid laner. Enemy botlane fed, toplane fed, jungler fed, mid was average, but not fed. So we spent rest of the games 3v5ing.... in silver.... And i lost lp for 2 games that ended up 3v5? So is this a new game mode? 3v5 rankeds? Okey if one guy left, game is somehow still playable.... But 3v5 without adc and without toplaner? and u make us lose lp for that? Riot is so buissy making new champions and skins instead of maybe balancing the lp system or bugs that happen all the time?