I hate to say this but ACTUAL skill issue.
You been playing for years and yet you still can't make the pace then this content is just NOT FOR YOU. Just because it's considered a "Normal Raid" doesn't mean its not suppose to be steps above leveling dungeons or normal trials. Since when did we put arbitrary labels on difficulties? Its like saying this normal raid is 50% more difficult than other normal raids therefore it is wrong. We are at level 100 now and have spent countless hours playing the game and we need to hold ourselves to higher player standards now. This coddling stuff were asking from Square Enix has GOT to stop.
Yoshi P is probably annoyed everyday when he wakes up seeing players complaining about things being too difficult one week and then too hard the next week. Please get better at the game or go be a crafter or something cause this is not for you.