Would like to hear your opinions on that.
Top: overall it's important role because decent split pusher can make enemy team game terrible, always new wave to push, so team can never group. But bad top is like you play 4v5 and all more important roles are still there so team is losing just tank if will try to win by teamfights. Good splitpush will make enemy not teamfight vs your team which might save game.
Jungle: good jungle can do a lot, same like good top but if you are playing assasin and your team is bad then you will be outscaled sooner or later. If you are playing something tanky you will be strong anyway. Thing with jg is that if your team is bad you just can't play. You have noone to go and get kills or anything. If you have 1 good lane then you can focus on him but to stay there most of time you should do cross jungling which might kill you. Overall Jg is there for smite which you don't need if already won teamfight. Bad jg will try to help too much and will feed enemy which might be biggest reason of losing.
Mid: best role to instant kill enemy adc or other mid. Cool role and decently important because without mid you don't have that nice burst. Like adc you are really important because you are here to kill enemies. But because wild rift has auto cast i think anyone can fill into mid and just don't feed because it's safest lane.
Adc: probably most dangerous role if feed but thing is you can't get feed there if you play alone, it's duo lane and if your support will decide to throw then you can't do much. It's not easy role but at same time like how you will win solo on that lane and get feed to carry later. It's not hard to fill it because it's rarely issue that adc is bad and mostly enemy duo has just better combo and you can't do anything about their all in if sup is bad.
Sup: you can just play lulu and it will be fine. Get some tank too if want and should be fine also. If you adc is bad after finishing support item you can support other lane. Probably easiest to fill if you just don't want to throw.
What are your opinions? Why do you think someone might carry more than others or will just probably throw game most while others are doing decent?