im in the same boat but with silver and heres my opinion (dont mind the length)
first off runes AND masteries matter A LOT! even small percentages add up at the end game winning fights and turning games.
SECONDLY ....dont take it harsh but it may be if your doing bronze things for 2 yrs u should begin to think what am i doing thats incorrect and what can i do differently to put myself into a better chance to win or help carry. getting that great kill from a well executed skill shot then 2 seconds later recalling in the bush when u just spotted the jungler botside and all lanes accounted for.... ( im hinting at not shoving turrets and not focusing objectives)
THIRDLY i spent a solid year in bronze and watched my friends climb as a i got more and more frustated but winning a few of my games playing my favorite champion.
ALL champions DO have a role in the game.. but quite frankly its like this.... if u think ur good enough to get out.... then go do it. PERIOD. if you think your a gold top laner then go trash and slam those bronze tops but u may ask yourself how.... if your laner that you loooove (
) doesnt reallllly start to carry some fights at a very high lvl with 5-6 items...take a different approach. basically im telling you this... play champions that carry easily... for example top lane fiora pantheon jax ppl that can just go in and beat the crap outta their laner and then go nuke the other teams adc and just win the teamfights and push and win...
take this into consideration.... for A LONG TIME teemo was my go to champion...had over 500 games played as him learned his max damage build tweaked his runes etc... i won lane almost 85% of the time minus some jayce panth and ap top laners however....if its truely THAT strong how come pros arent playing this....
im not telling you to go do what the pros are doing....ur games cant do that the communication just isnt there. however theres a reason why teemo's only been played once in the NA LCS in the past 2-3 years..... its just not viable to win....
recap:
1st fix all runes and masteries and FIND OUT WHY those are the best way. dont just copy the pros pages...why r they doing that.
2nd watch some youtube vids on what higher elo players are doing that lower elos arent ( more quickcasts more items being used by 1 keys not clicking on it)
3rd play laners or champions that carry EASIER ( kayle jungle kalista adc annie mid)
thanks for reading my opinion and feel free to add ask some questions 