Except for those of us who have used several different programs and can speak with experience on them.
If you have an iPad Pro you can deal very easily with 4K video. By far the best editing app is LumaFusion. It leaves everything else in the dust.
If you want to stick with a Windows laptop, you’ll want a reasonably fast processor and a lot of RAM, but the graphics card is really important. A lot of video editing programs can take advantage of multiple cores on better cards. Look for a laptop that’s geared either toward video editing or gaming, which also call for good cards.
For software, my preference now is for Adobe Premiere Pro. DaVinci Resolve is also very good. Both have a bit of a learning curve, but nothing that can’t be conquered with a few YouTube tutorials.
I also used to Like Sony Vegas, but it was bought by another company a couple of years ago and seems to be suffering.
If you want to get a Mac, there’s iMovie, but I find it to be too dumbed down. Final Cut Pro or Premiere would be better choices. I’m not sure whether DaVinci Resolve is available for Mac, but I think it might be.