I am a fail as a healer, what dps class should I try instead?

[Reinhardt_Azureheim]

You are not even Lv50 on your Conjurer / White Mage, you are practically still learning. You don't become an optimized Healer over night. Keep going I say, for I don't know what DPS to recommend if you give up on healing already.

Additional things to remember: Healing is more than just pressing spells and abilities. Is your gear up to date? What about the tank's gear? Is your tank using defensive cooldowns to lower your burden? Are DPS players killing enemies in a reasonable time so you dont have to use all your tools in a single pack?

Over time you learn to gauge the competence of your party members, which will allow you to learn when to use damage spells and when to heal, how much you need to heal, whether you can stun enemies with Holy, etc.

But start small. Use Cure I + II depending how much heals the tank needs, use Medica to heal group damage, use Lucid Dreaming at 7000ish MP to regenerate early, use damage spells when things seem stable. Failures / deaths are ok while learning, it is part of the learning process.