is it normal

guys is it normal that my last 15 games i lost cause of afks trolls and toxic players cause i cant unddersand wath is happening i was in promo for gold 3 and :/ after that i lost all my games cause afks trolls and toxic players i swear i win my lane but always som1 go afk or some1 trol or have just a toxic player that demotivate all team just tell me if is normal cause im thinking stop play am jus done 15 loses in a row cause of that and if someane can help me :/ now am gold 5 0 lp i had a mmr of gold 2 and now have mmr of s2 :/