Howdy wow friend! Welcome to FFXIV ♥! I've recently (as of 3 months ago) quit wow myself after like 10 years of playing it as well, you'll enjoy it here and I hope you find many years of joy and friends like you did in WoW.
I highly suggest the first thing you do if you ever plan to level a healer is to make the most passive aggressive and cringy raise macro you can to make people raise and then die again from the cringe of it.