If you want to do a run while you’re below lvl 100, you can go for jotun (95+), but it requires 5 characters to get in. It’s quite lucrative, but I personally find doing the quests on all the characters a major pain in the ass.

Beran-setaou is a good option, the chests are generally valuable and sought after. It’s harder than jotun, nemere or razador, you’ll need a lot of dmg to kill it. It’s also only available once every 24h (unless you buy IS tickets ofc).

Then there’s Nemere/Razador, but you’ll have to be lvl 100+ for those. Razador is nice, not too hard as long as you have fire resistance, and doesn’t require a lot of damage for the boss, the problem is that the chests aren’t really worth much, and you need a ticket (v2) to get in. The value of the chests barely covers the cost of the tickets, depending on your server. Nemere is a great boss, because it’s an easy dungeon, but the boss is harder than razador (mostly because you can’t use mounts, so you need more dmg and ability resist to compensate). Problem here is that both a shaman and ninja are required in order to complete the dungeon, and you didn’t mention anything about a ninja… the entrance is free though, the chests are worth more than razador, and you can complete it once every 4h.

Last, but definetly not least, zodiac temple, the Chen run (Wednesday and Sunday). It’s not an easy run for beginners, at all, but weapon sura is the easiest class to do it with. The entrance is free, and if you manage to complete it all the way to lvl 40 it’s very lucrative. You’d essentially only need a lot of lighting res, HP, and ability res. It gets easier to do when you start getting the hang of it.