You can use android deblaoter or ADB to disable many of those packages, but not all of them. Be warned, that you can easily cause instability this way.

If there’s a custom ROM without gapps and touchwiz or sense or whatever they call it these days, that would be a much preferable solution. Unfortunately, Samsung is determined to be difficult about custom roms, so very few are available on their devices.

When you have the means, I recommend a pixel with graphene or a Linux phone, depending on how serious you are.