I get why you might be thinking this. If you’re on PC, I suggest modding the game. Im playing though my 2nd play through. Played through to PL and then only recently decided to play with modding and it’s a game changer. Now playing the PL part of the game and already thinking about a 3rd play through. The mods I have make it feel like a remaster. If you want I’ll list out the key mods (just let me know).
I think you can actually. If you’ve already completed the game there’s a mod that allows you to start a new game plus. You keep all your stats points and gear, and I think you can have it start as if the story is complete so you can just explore the world again and do all the side stuff. I’m not 100% sure but there are loads of YT vids that cover it. Just look for cyberpunk new game plus mod.