2019 Rogue SL AWD and I hate it

I totaled my 2017 Rogue a few weeks ago. I seriously loved my car. I had around 86,000 miles on it and never had any problems except some kind of ac leak that caused a moldy smell. I was sad about my totaled car and bought a slightly newer Rogue but an AWD not fully understanding what it meant and now I hate it. It is loud and makes a weird humming noise when I go above 55 mph. Also the gas mileage sucks. I’m hoping that I’ll get used to it as I keep driving it. Is the noise level and weird humming sound when going above 55 normal for an AWD? I know the lower gas mileage is. My dealer did not really explain any of this to me.