I've never touched Wukong before, and I likely won't, but I'm sorry to hear that it's not meeting your expectations. But it kinda makes sense that the bosses aren't as challenging as it's not exactly meant to be a soulslike but more of a character action game, right? It's got some elements of a soulslike but not enough to actually be one is what I'd heard.
That's so nice! Although small caveat: Demon's Souls Remake is a PS5 exclusive. So unless you somehow found a way to play the PS3 version on the PS4, you probably didn't play it on the console. Maybe PlayStation Now or something?