Why are a lot of people in bronze bad. *opinion*

So I think I have finally figured it out. The real reason people in bronze are bad is very simple. Their view of what meta is blinds them to the point nothing else makes sense. They think that any and everything bad that happens happens for only 1 of 3 reasons.

1. Someone did not pick the right champion for the lane.
2. Someone is not building right for the champion.
3. Someone is bad.

Of course I'm excluding afk from that list cause that applies to every lvl of rank. Honestly I think i could expand on that more but I will leave it as is for now. Honestly I would really like to hear everyones thoughts on why bronze is bad. In detail along with examples.

I will give some for myself. If you look at my posts it is always about me cause i'm selfish or whatever. So I go top Twisted Fate AD with smite and heal. You can imagine the comments i get. But usually i get first blood and if i do end up dying its due to a 2v1 scenario. So instead of realizing it was 2v1 while my jungler was there but just attacked the frog despite my pings. it's my fault for being bad.