People think they can just instapull and bring half the party in when they're still trying to acclimate to the arena and expect it to not be a rough time. Let your party members have some breathing room at the beginning, set a timer to start if no one else does. You'd be amazed how much better you are at the game when you have breathing room to pay attention or when you don't have the weakness debuff 5 seconds into the pull because you took the first auto.
To start, Expert roulette is called just that, expert. Why shouldn't post-MSQ dungeons be remotely difficult?
Did I get annoyed at cactus boss the first time he pulled that surprise expansion aoe? A bit. Then I learned and got to watch others in DF fall for it, and then learn as well, and we got to bond over thinking he was a rude SOB. Rely on your party members if you're having difficulty, follow them if you're having difficulty. You're not by yourself.
I started playing during late shadowbringers for the Nier raids, and even as a new player I found most content to be exceedingly easy, but because it was so easy, I got overwhelmed in savage because there was a significant jump in difficulty, and I felt bad dying repeatedly and wiping us when other content was so easy.
It felt like there was a ceiling for me in shadowbringers because normal raids were SO easy and then I got into savage and got flamed for not standing in spot xyz with perfect cadence.
But this expac? It's actually fun. Frenetic at times, but it's really not that difficult. Most mechanics can be easily avoided by taking a "pay attention to surroundings first" approach.
Afraid of bee lady? Don't hug close to her. Watch. You'll learn that her hearts have a very specific pattern. The other mechanics do too. Take some time, cooperate with other party members and talk with them.
The mechanics may be spooky and fast for some, but they're not that punishing. I see people running around with 3-5 vuln stacks on the regular as first timers and living. Previous stuff? You get that high, the next mechanic is killing you-full stop.
The raids are clearly supposed to be a pipeline for harder content. Savage hasn't released, but I already feel so much more prepared than previous tiers. Last expac the first fights were so boring in normal that I legitimately was falling asleep(and once did with ericthonios) waiting for mechanics to happen, then I hit savage and the groups I was with were so unprepared for the difficulty spike that half the parties disbanded after a couple pulls.
People forget that last expac, there was a lot of stuff that would just instawipe you anyone managed to fail. This time around you get a harder mechanic, and everyone who fails gets a vuln stack, for the most part. If anything it's more forgiving and gives you better feedback if you messed up.
Normal raids should prepare you for savage, and this tier does just that.
Frankly, M4 could stand to be more difficult and bridge better to savage.