If you need that many addons in order to play the game - there is something wrong.
Most of the bosses give you clues in what to do, if you are paying attention.
Crap that swirles under you is a good indication to move
A boss that targets you (and you are not the tank) is probably something you should be paying attention to in the first place.
A big giant cone of crap blowing in your direction should be your first indication to move.
etc
etc
etc
Do I have DBM - sure but I don’t pay much attention to it – I know the fights so really it is background noise.
These fights are not that difficult to figure out, I am not going to lie.
You are asking these addons to tell you exactly what to do and when to do it…and that is the issue… it is a crutch for bad players.