help meh?

anyone wanna duo? playing placements and ive had an afk or some idiot on my team every time dont feel like getting b5 it should srsly be valued not on win or loss but how you do i think it does a little right? or is it just wins and losses? cuz if it does how does that make sense? you have one good play and he cant 1v5 a team game like yeah ppl get pentas but srsly come on just tilted taking a small break but add meh swaflord tired of idiots who afk or forget smite n ot saying im perfect but when someone comes into my lane and dies to my laner then he snowballs it on me what do i do as nasus? against darius i just farmed and he roamed shoved lane into his tower my team tried fighting him hed get more fed another game kat killed me once roams top i follow pinging my team to back off they both die and so do i cuz i tried getting rumble who got away with little to no health what am i doing wrong? how tf are you suppose to climb when ur teams are constantly fighting and dieing not caring and just playing stupid contesting things they shouldnt trying to 4v5 or something just i dont think is right? or a lee sin that doesnt bring smite? and tower dives and dies and hes behind by a mile and goes full ad until i ask him to tank ? wtf? im just :/ ign is swaflordy