how do i get out of brnze as an s5 player

i started in like patch 5.10 i quickly grew to loe the game when i reached lvl 15 a year ago. My first main was akali and i instantly loved her , ai i always seek asassin characters in games. i found i can do insane burst dmg, and learned the game and the role more and more playing with all my free time everyday.than i found talon around lvl 25, and hes always been my favorite champion. but now after a year of hiatus ive found myself unable to break free of bronze. i cn always get out of b5 but thts about it. i have basic understanding of items and such, but i still build and play ..well..bronze and i want to get better really bad. ik it took a while but here are my questions 1.i despise cc with a passion, and understand why its in the game but dont at the same time. i feel like cc just detroys play making potential and lacks counterplay, and have no idea what to do when im the strongest in the team but always gets cced oneshot before i can do anything 2.y is there untargetability? i feel like it unfair that such a powerful mechanic can be so champion specific, copletely negates every other champion.something like it i feel more balnced is yasuos wall 3.im an assassin main, and i love every role but bot, and is eager to play any lane or jg but bot,y? because u hate begin susceptible alon, when theres a hundred and one ways to get oneshot. i hate being unabkle to 1v1 a sngle player in the game, muchless all of them. i feel helpless when a yi ,fizz ,zed,tlon, even fucking xin and trundle jumps on me, like theres nothing i can do but rely on my team 4.anywasy for the most importnat question- how do i climb as a shaco main?ii usually start a big buufff, go immeidateky to the opposing buff, get first blood, do a small camp gank farm up some more, rush tiamat and usally pick up the jg item last.i feel like the longer the game goes on the more my chance of victor plummets