eehh i need help this game makes me so sad and depressed

So i have been play LoL for about a year now and i was like i messed up my promos pretty bad so im going to grinf from b4 to at least s5. Not that big of a deal or a very big goal. Ya thats what i thought, i did great untill i hit my first series to s5 from b1. I lost them, i was kinda sad but had hope that could get there, then i got back into my series and thats where i hit a brick wall harder the bronze soins miss there ults. I keep losing and losing and losing we the win here and there so i would not go to b2 and derank, well that happen. I'm not trying to sound like im all that and stuff but around 8/10 game i do pretty good but all my team does is make bad calls a feeds so hard i cant carry them, most of the time the team wont communicate at all or ping. i try and try and try but i cant get any where and it feels like roit put no time in the macthmacking system. it always feels like i got the bad team or the trolls. i also just lost a game because i had a yi supp and the cass on the other team was a d5 smurf i have feeling that i will not be able to even make it to s5 let alone my series again because of a yi supp and a smurfing cass that was d5 on the other team. Is this just me, roit help pls change something.