When you're ready to switch back to the iPhone because you hate the Samsung, we'll be here. I did the same thing with the Note 10+ and was quickly reminded after a couple weeks why I still use the iPhone. It's a gorgeous phone with flashy features, but they wear off fast. Once the high refresh rate arrives this year with the new iPhones I don't really have another feature I care all too much about that the iPhone doesn't already do. The Samsung is even more annoying than typical Androids because there is literally a Samsung alternative app alongside every single Google one, including the terrible Bixby assistant. There are ways to map Bixby to default to the Google Assistant, but the phone requires a lot of fudging just to get it the way you want. They even have a terrible Samsung store. Samsung is desperately trying to be their own thing ... and they just need to embrace Google's features instead of replacing every single one with their own. It creates a mess. They are absolutely beautiful phones, but there is a lot to hate about them.
I have been a Samsung user since the S2 and can completely agree with everything you say, also it wouldn't be so bad if they used stock android, but they also include their terrible bloatware which does the os no favours. Another thing that has annoyed me with Samsung, is the Samsung Pay system, while plenty of shops support it, the majority of banks don't, in theory it was a good idea, but in practice in the UK, it is pretty much useless as it isn't universal among all banks like Apple Pay.