Even back in 2018 when I did the story first it took me well into several hours to find an SM dungeon via AF.

This year when I was playing through on an alt, I queued for every single SM dungeon I could while in level bracket and got 0 hits over literally dozens of hours of queueing. (That’s during peak EU times, going into US evening, by the way)

So, while you’re definitely welcome to queue and wait for nothing, I’ll keep telling people to save time and just find someone in LFG in like 5 minutes tops.