Have you tried Resonance? It’s a mystery adventure game set in modern times where you play as four different characters whose stories interconnect. It’s been a while since I played it (a decade or so?) but I remember that it had an interesting game mechanic that let you use memories like items in various interactions, as well as a number of puzzles that I rather liked the design of.
Unless I’m missing something it looks like it doesn’t use Denuvo? (Steam lists a custom EULA but I don’t see Denuvo listed.)