The final Trial for endwalker needs to have some form of priority system

The final trial needs a priority system or an incentive system like castrum and praetorium for assisting players who haven't done it yet to do it. I'm currently waiting in queue to do it. I can't do any of the end game content until I do it. All of the content is gated behind this trial. However after waiting for 130 minutes I'm starting to lose my patience and I don't really find that unreasonable. What is more is that it doesn't look like the queue will pop any time soon. Given that this is mandatory for me to complete and can't be done with AI what else is there to do?

Party Finder, say there's a first time bonus.

Your problem though is because you're on one of the new Australian servers, and there's been other AU data centre players also complaining about not being able to get parties in Duty Finder for the past few weeks, because there is a far smaller selection of servers to choose from, and, due to character transfers to them from the JP/NA/EU data centres being somewhat congested, there is an imbalance of new characters to high level/post main story ones, so there would not be a large amount of players queuing for that content sadly.

As Yuella suggested above, try using Party Finder and creating a party through there - stating you need it for main story completion should get at least a few takers.

Either way, don't give up! :D

Party Finder.