Most important role in valorant

It’s really base on the map and who is playing which role but I think it’s generally

Controller > Initiator > Duelist > Sentinel

Controller- Extremely hard to win without one
Initiator- Hard to win without one, but the role can be fulfilled replaced by certain non initiator agents if utility is used well
Duelist- A good duelist can single-handedly win you games, but if a duelist is replaced by an initiator on certain map, you’ll honestly be fine.
Sentinel- A good sentinel can also single-handedly win you games, it’s a must play on heavy attack sided maps or else its belt to ass.

all 4 are important but this is my opinion

This is a very abstract question but it's initiator imo. Yeah controller has big impact over the pace of a round but initiator diffs are brutal to overcome

We can all agree senti is the least though

every role is important other than some specific maps

but in ranked duelist is prob the most impactful

controller might be the most important but a good ini on your team or the other can change the entire game so ini is maybe the most impactful role?