Isn't the game for 16 years old and older?
You might want to start there, perhaps.

Then, MMOs are like that. I don't want to sound like an annoying guy but there's clearly a lack of judgement there. Playing FFXIV or any other online means exposing yourself to other people, and the internet has some kind of amplification effect on these kind of behaviours (being entitled, agressive and else). That's not something to consider lightly when choosing such a game.