Adding to that the fact that I don't receive system updates anymore, I have absolutely no trust in my phone. My next phone will be an iPhone, for the lack of better alternative.
I don't have a previous experience so my reasoning was "well it's Samsung, at worst they'll have some shitty branded apps and some cruft". But I don't have an idea what these dozens of preinstalled apps running on my phone doing. Almost none of them can be uninstalled and only a handful can be disabled.
It is kind of scary to use a banking app on this thing. Never felt this way on an iPhone. I wanted to see the Android side after years of iPhone use, apparently it is still shit.
My wife, who is not a tech person at all, flatly refuses to run any banking or financial apps on her Android phone. She knows just enough about the technology to know that most Android devices are cesspools of spyware and malware, even her Galaxy phone. She doesn't like iPhones though, so I doubt she will ever go over to that side even for security's sake.
Lie to me and I'm done with you, especially over something as important as privacy and freedom. It may now be closer to what they originally promised, but I no longer trust them.
It's a shame because they're really the only company doing what their doing (a fighting a chance at open source (as possible) and secure hardware)
Give it time. The slow-downs/reboots happen to every Android device over time.