Not defending the content at all but if you are low level Anemos is still viable from what I hear and the synching means you can level up in there at least up to lvl 24.

If you really want the relic, I'd suggest that route until maybe more people in Pagos have mounts and either the train gets going properly (it's still a bit 'everyone for themselves' right now), or the devs make further changes to Pagos which would hopefully make it more viable for you. Such a shame this content is so unfriendly to casual players.