for healers, the Ravana Ex is never easy on your first time. well, unless youre really good and pick up things quickly. just keep practicing and you'll get the hang of it, you can even do dps in downtimes when you got comfortable with the fight.

as for the 'gaijin/foreigners hate', i think it was mostly caused by the rude attitude of many english players. been playing for a year, and honestly i never met that kind of hostility towards me (hopefully i dont have to.). i found that if you take time with using the auto-translate feature (for 'hello' and 'thank you, have a nice journey'), do your job well, and apologize after you made mistakes, it would be just fine.
but please note that this is based on my personal experience.