Same, I only ever found one at lvl 11 I think, and since then, every single thing I see I loot, and nadda. I got 2 blue provisioning recipes, but that is it .I have yet to find a motif. Any motif. Sure, I don't look that hard, but I am still lvl VR2. No motifs in 52 lvls? RGN must really have it out for me. I open drawers, boxes, backpacks, wardrobes, etc when they are in my path. I don't go out of my way to look for motifs, but they shouldn't be so rare as to NEVER find one.
I found all the regular motifs, and the primal motif in the first 2 weeks of the game, and I really didn't play THAT much. I opened every container with which I came into contact.
I've heard that recently the container loot drops have been nerfed to hell though with diminishing returns.
You know, now that you mention it, i found most of my motifs on AD as well!
That might explain a thing or two ...