Runes of Magic US / AU

Depending on the server you play on, there are common channels you can join and ask around in for people to run instances, like a free World Chat. Some common ones are; /join Trade, /join trade, /join World, /join world, /join LFG. Hope this can help you!

It would be nice to have a better one, but I doubt it would solve the problem. For one, few people run instances, because by the time they can burn it down without destroying all their golden hammers (and therefor their $$), they don't need anything from the instance anymore.

Also, while a good dungeon finder has worked nicely where the majority of the maxed level population are capable of running endgame both in gear and knowing how to do strats, that's not the case with RoM. Only a small group of people are both capable AND willing. So you'll most likely end up with dungeon finder giving you a group where half the group is either way undergeared, or a group that aren't able to coordinate and execute any strat.

Imo, best way is still to run with guild, or a group of people you're familiar with from other guilds. Most medium sized guilds have a group of people capable of running normal mode content, and some mid-endgame guilds older hardmodes.