Unable to find party for first quest dungeon, Sastasha Seagrot

[Chrallmal]

The DF does indeed employ cross-server matching, so what server you chose shouldn't be an issue here. Note, it only pulls users from within your data center, but that's still a very large pool.

As it stands, the DF is absolutely beyond saturated with the new DPS classes. As well, a lot of people are not going through their lower level roulette's (a mechanic meant to entice veteran players to replay lower level dungeons for the sake of helping new players progress) because they're so busy with the new content that Stormblood introduced. Lastly, time of day can make a difference depending on what data center you play on and what timezone you are in.

It's going to take some time to settle down. Otherwise, look forward to 30-60+ minute wait times as a DPS.

In the meantime, a way to increase your chances is to expand the players you are willing to play with and the conditions therein. On the DF window, you should see a small gear symbol in the top left. Clicking this will allow you to broaden your criteria for searching. You can then select things like "Play with people who speak Japanese, French, German, etc" in addition to English. Most people don't talk in a DF party, so language barriers isn't really a thing. That, and the game has auto-translate capabilities for most common phrases.

You can also activate the option to enter a party in progress. Sometimes a party loses a member and needs to replenish their ranks. This can be a quick shortcut to get you into a party faster than someone who doesn't have this option active. Note, this does mean you will miss part of the dungeon that, that party had already completed up to the point that they requested replenishment.

The third option is to grossly out-level the dungeon without having ever done it, then go back in unsyced by yourself and go God-Mode on it. Not recommended unless you used a job-boost potion. Even then, I wouldn't recommend it on low level dungeons because they're great places to learn mechanics you'll be using the rest of your career.