No, you got carried by other people who knew what they were doing. Frist time he casts Black Harvest would have killed enough people or straight up wiped the raid unless you magically "learned" about soaking souls before it ever happened. Same for eyes, even ignoring them for 3-4 seconds can wipe a group. Same for Storm of the Destroyer, you either saw everyone bailing and followed them or you stood there and died instantly. You also learned Flames of Sargeras within 3 seconds? (aka read the tooltip when it was applied?).
Now if you read up on the fight ahead or watched a video even if it wasn't 100% clear, then again, you didn't learn it on the spot, you had some knowledge of what to expect.