hmm i’ve struggled with procedural dungeon layouts as well the best i could come up with was Random Map Event Generation 
(like Slay the Spire)
the advantage of this is that all the data is storable and readable. I have 0 clue how this could translate into tilemaps though.
richard did make a really good procedurally generated dungeon tho i think it’s exactly what you need, check it out here: Dungeon
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