Take in mind, there is Crosswinds trait, but i dont have it yet on this log, and its inside FoF hits. I try to line up FoF with add too, but god i have so much to do with encounter mechanic, and forgot to control if i hit FoF or nah... my god
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First thing i see to easy improve: Use Potion of old War, change your neck enchant to Hidden Satyr (not that good, but better) try to switch for Serenity on single target, is so much better !! Geez you have so much haste, run mythics +, farm mastery stat... try to farm Vault or Maw for better trinket. You can still use better enchants on fingers and neck.
You have such a low dmg from SEF, sometimes its very buggy and spirit hit air, not target
I think its something wrong with your opener, 660k in opening burst is very low.
Upload your logs to Checkmywow to anal yse your rotation and management. I try but itseem you have personal hidden logs