Remember that unlike WoW, ff14 has no limit on combat raises. Dying is very normal when you're new. Even more so when you get to higher level raids and trials. Because of how the healers and even several dps can rez the entire group several times over, more mechanics will outright kill you until you figure out the trick to compensate. This makes it feel rather difficult starting out, but quite easy when you have experience and know the fights.

Expect to die a lot on your journey. It's normal, stick with it.