This Tank Meta needs fixing

Tank meta would be fine if not for the fact that essentially every tank can actually deal damage like a carry. Or if they did the job a tank is originally suppose to do which is protect the carries. Whether it be an adc or apc, i feel as though both are very underlooked in this meta and the tankiest team generally wins. It might not be as prevalent in top tiers but casual players or low elo players have trouble if they play a champion that isn't a tank. Voli, Tahm, Mundo and other strong tanks are far too strong but all that riot has recently done is nerf assassins and mages. I used to main adc and mid but now the idea of playing against a team of entirely tanks besides an adc makes me want to just support, seeing as i'll barely be dealing damage anyway. It shouldn't be tank meta or adc meta or mage meta or any sort of position being stronger than the rest, the game SHOULD BE BALANCED. The team that wins shouldn't be decided on who has the most meta team, it should be decided on what team has done with the champion they have. It shouldn't take everyone targetting a mundo for 10secs in a 5v1 to kill him but at the same time an adc should not be able to crit for a mages entire health, while at the same time one spell shouldn't kill an adc. Just a thought but it be better for the game to really balance every role. A lot of people aren't playing the game as much because it is losing its value as a casual game and more tailored to top tiers. The professionals should not be the reason things are changing, it should be the community as a whole.