There are visual indicators. Stop looking for orange aoes and start looking at what's actually happening around you. See drones lining up around the boss pointed outwards? That is probably a lot of cone/line aoes or a donut aoe. See rotating aoes around the arena? Follow behind a set and you won't get hit. See red aoes moving outwards in a line with small safe spots? Stand between the first set and then move before the second set hits. Ignore the flashy indicators and focus on what is actually happening. It is a far cry from Extreme/Savage content, I promise.