This sounds like the group I first did HM Garuda with. Myself as healer and a tank friend both zoned in and admitted it was our first time, but that we'd watched videos. They explained the fight again to us and the healer marked himself and told me to just stick with him. We didn't wipe, but I suppose Garuda is a lot easier than Titan.

The other week I did AK for the first time as DPS (second time total), and we brought in another friend on his first time to be healer. We kept wiping due to some silly mistakes (namely, the tank had forgotten an important thing to explain about the safe spot in the first boss fight, and I forgot it myself since I'd only done it once myself). The BLM pug in our group was very patient, we apologised for our mistakes and that we were mostly inexperienced, he even said he hopes that if he's patient and teaches, then the people he teaches will do the same for another newbie later on.

So yeah, there are nice people out there in the sea of duty finder, and it's always great to meet them