Hardest role in leauge.
In my opinion the hardest roles in leauge in descending order would be ; ADC. JG. MID. TOP. SUPP
My thinking is that adc requires the most skill out of these roles, positioning and pure mechanical skill. ADC's also have a hard time coming back into game and if u get behind usually can only do dmg till late game unlike other roles where they can still have utility etc. From my experince playing all the roles adc is the hardest. Every other role i find quite easy but maybe im a dirty biased ADC main.