USB-C devices still seem to be notoriously likely to not entirely support standards when it comes to power levels, etc. So yeah, official stuff would be ideal,

USB-C devices still seem to be notoriously likely to not entirely support standards when it comes to power levels, etc. So yeah, official stuff would be ideal, though I've had nothing but success sticking with Anker brand stuff so far both for chargers (I've not used the Apple one in months) and powerbanks. I am not surprised by your story though, sadly.