I'm not trying to be mean to people in Bronze, as the highest I ever achieved was Silver 1, but.... I mean, Bronze is bad. Real bad.
I made a smurf account to play with some of my friends who, at the time, were Bronze III and V. They couldn't play on this account because I was routinely getting paired with golds and plats (this was about 2 years ago). Anyway, we'd play, they'd feed out of control, and every game was a stomp, so I made an alternative account.
Here's the thing; I would play games with then against a team of Bronze players. It was always a hideously disgusting slaughter where I would get fed out or control, unless someone else was smurfing.
What really stuck out to me was that the ADC players would just push and push, and could never last hit, and were hyper aggressive, because junglers could never gank correctly, if they tanked at all.
Eventually I would just go Sona, build straight up AP, and get fed as fuck, roam the map, and explode everyone. It would be even worse as an ADC, mainly because I would always triple the amount of CS of my opponent by 10 minutes, murder them, and then just snowball every lane. I would then end games fast because if I didn't, there was a risk the enemy team would eventually catch up by killing my terrible teammates who would chase enemies into their unwarded jungle and get blown uo by a 5 man jump.
Seriously, no one in Bronze knows what the hell they are doing. I mean, in Silver, hardly anyone knows what they're doing; I have played games against diamonds, and despite feeling super confident with my support skill, ADC ability, and some mid champs, those games made me feel like I was a toddler trying to fight a professional MMA fighter.