Since you bought the unlocked version thru Samsung, did the phone come with the microSD slot? Which carrier are you using?
I have three Samsungs in my house. The one thing I hate is Bixby. It turns on when you don’t want it. It took over my daughter’s microphone, so she couldn’t make phone calls. It was a nightmare to get it back. (Many webpages on this problem). I’d love to get a Sony Experia for the best camera.
I am using T-Mobile without a glitch, except when somebody cut the cable last week. Anyway, I inserted my SIM card and SD card, turned the phone on and it set up instantly. Used the onboard software to transfer all of my data. All updates are coming right from the manufacturer, and the best part, no T-Mobile bloatware! YMMV.