Hello! So, I recently played a minehut server that contained random generated dungeons, and I thought it was really cool! Sadly, it was all skript, and there are no plugins in minehut that can help you with it.
I fount this plugin, DungeonsXL, that works in 1.16, and it would be perfect for the job, and it's rather easy to use!
https://www.spigotmc.org/resources/dungeonsxl.9488/
It would be great if it was added to the minehut plugin list.