Good day Myimoon,
I believe that our guild Faster than Lag could be a great place for you to grow.
We cater for new and less experienced players with an aim to show end game in a calm and safe environment.
We are actively clearing heroic NP in 1 night and may possibly step into early Mythic next tier, but only in the same environment as heroic. We run plenty of keys and delves to help with the weekly vault.
We also have several American players with us who have also migrated to EU.
This is our recruitment post