I want to come back to photography after 10 years break (mainly portraits and landscapes not fps situations), and maybe occasionally film some videos.

I have a chance to get a second hand nikon d850 and use my old Nikon lenses. Or get Z50 + 3 lenses for the same price.

Full frame and a battery life seems to be a good advantage, but would I really need it for my needs? Z50 is more compact and it will be nice to get 3 lenses that will fit all my needs for the same price. Back then when I was shooting for the entire day I never took more than 150-200 photos, so taking so many photos was never a big thing for me. So what should I go for? Sony seems overpriced as usual and Canon&Fuji seem to be behind in their IQ. Youtubers and redditfags really didn't help me to get a proper opinion. I just need a simple camera to get sharp photos, without machinegun-tier specs.