Am I playing the game wrong?

[Ronduwil]

unfortunately FFXIV combat system is deep as a puddle just pressing 1,2,3 in a rotation and combat doesn't really change much from that.

If you're still playing with a three button rotation after level 30, you're playing wrong. Granted, most tank and healing jobs have relatively simple rotations, but heals and/or mitigation should be thrown into the mix in those cases. Most jobs have a relatively complex rotation by level 60 that gets even more complicated as they level to 90. The nice thing about this game is that there's something for everyone. If you want a simple rotation, you can pick a simple job. If you want to go nuts weaving and double weaving between every GCD skill, there are jobs that provide that, too.