Elo and my frustrations with ranked

So I'm at Bronze 5...yeah yeah I know I suck lol. The thing is though, is that when I play with my Gold V friend I do fine in games and I can hold my ground fine. When I'm playing ranked the people in my games are up to five ranks above me so it's like why do I lose so much. I got put at this rank because I played ranked when I was still new and lost all my games but that was a long time ago and I'm now stuck at my rank and I feel like I lose all the time. I'm not gonna blame my teams but like people throw a match when they are winning so much and bans are aimless. I want to improve and get better and I am but when I still don't progress it deters me from playing the game. Also Bronze V is so toxic its actually crazy. People are nice in the beginning but the moment you do one thing wrong they jump on you like a pack of wild dogs. I feel like mid is the only role I can be a carry on and ADC Ziggs but whenever I choose ziggs adc my team flips on me and half the time my support will not give it a chance and throw or go mid. Like I'm not perfect and I screw up alot but like I feel like I've been dealt a bad hand in half my games, like why can't people just chill instead of typing instead of playing. Any tips for actually winning because I do love this game and some people really are cool but at my rank I feel like my elo at least belongs in silver V and the lack of progression and toxic people really just ruin the fun. i understand its ranked but it's still a game that people play for fun and when people treat it like its the military it sucks. These are my thoughts and concerns. Do with them what you wish. P.S. Rek'sai feels so weak right now and I really think she needs some buffs to be at the same level as other junglers.