You say this, and yet I re-played Deus Ex a month ago on whim and it was still probably better than 100% of all games in PS4/PS5
I like most immersive sim games. However, the market does not seem to like them. They are very hard to make and get right, but the RoI is mostly cult following.
If you liked Deus Ex, you might also like Dishonored and Prey.
PS: I would love to build an immersive sim if I get enough time, but I know for sure that it would just be a labour of love, like a painting which may or may not sell.
Prey and the Dishonored series are up there, for experiences of that sort. Go in blind to Prey if you can.
Though I played those on PC, not PlayStation.
Look, the word "better" has no meaning here. This thread is pointless unless those involved are discussing specifics and acknowledging personal preferences.
Anyway, Bloodborne is a PS4 exclusive masterpiece and it would be absurd to suggest that it doesn't approach the level of quality of games in the 90s.