DCC RPG

Kind of jealous but beware of exhaustion after that much judging! 🙂 I don't know if I can be of much help beyond suggesting the vast Goodman Games catalog on DriveThruRPG (read the reviews) or The Gongfarmer Almanac volumes which are free and also contain adventures. Myself I like to cobble together dungeons from real life places, ideas from books, games etc., and random RPG materials but do this when you feel confident. One also has to have energy...

Advice, for what it's worth: I feel that from reading and watching about OSR and DCC people can get a very exaggerated idea of how big and deadly the dungeons should be, especially for non-veteran players. Myself I nerf "official" monsters and traps and still feel very close to massacring PCs all the time. Don't be afraid of adjusting to taste. A dungeon module is actually good for many sessions if they explore it thoroughly, which they probably will if you will tell them it's easy to die. Make sure they're aware of the Luck and spellburn mechanic, since the game seems balanced around this.