You don't seem like a new player or something. You have over 100 posts and are level 100.
Of course you won't get banned for dying to mechanics. People go into daily roulettes expecting all the players to die to everything. Not because of it being hard, but because a lot of the players in the duty are new, first timers, returning players, playing an unfamiliar job, or don't fully understand the game yet (mechanic snapshotting, cast bars, common mechanic indicators).
Story content is designed with the idea that these sort of players (new and returning players) are doing it. So, they certainly wouldn't ban over it.
DPS rotations are like that. Especially melee DPS and their positionals. They cause tunnel vision and that was always part of their difficulty. Healers, tanks and ranged physical DPS don't have this quite so much, especially when you get used to them, although personally I find SMN and PCT to not cause tunneling either given their simplicity.
I see you're on an EU world. Whenever I play there for even the briefest period, I encounter toxicity in Duty Finder. I find there to be more people in the EU that are sweaty and toxic compared to the NA region. You can queue for a trial or normal raid roulette and the moment you do something they perceive as "wrong", they call it out very, very bluntly. I was in an expert roulette there and they berated a poor sprout tank completing a dungeon for the first time. They insulted them all the way through to the end of it ripping apart everything they were doing. It was hard to watch. Never see it in the NA region at all.Players who black list me to avoid be in endgame content
When you are about 20 levels above it, you can solo it using the Unrestricted setting. I guarantee you can enter the coils as a level 100 Pictomancer and kill the bosses in 1 hit each. You may not be able to complete them immediately on release, but you can eventually when they are several years old.since then i haven't tried to do any endgame content when i know that i will never able to complete them.