It is unfortunate but they stop sending updates to force users to buy newer devices which are fully supported and updated often.
I've had my Note 8 since 2017 and I am still able to use it for everything I need and enjoy it. It's a trade off when we decide to keep a device longer than 2 years that we lose out on latest features for Samsung and Android. This will happen to all flagship devices.
Not much choice but to live with it, try custom roms or purchase a newer device that will have the features and software support for the timeframe you plan to keep the device.
@Kurosaki I use to root my devices as well to access mobile hotspot and custom features but I no longer needed to for a while now.
It is risky for security with custom roms but we're pretty much at end of software life on the Note 8.
I will have to eventually buy a new device if I want access to new software and features as well. Have to weigh out the needs, wants, and financial.
I am in the same boat. Last year I started to trade in for the Note 10 but quickly switched back and returned it. Now with 5G coming out (not that my area will have it anytime soon) I want to buy an upgrade, but am actually looking outsie the Samsung line. I like my note but I don't use the pen very often and that just makes it the same as an S series. Most manufactures are announcing that thaey will upgrade software for 3 years only. So if you get a phone now with Android 11 on it you should be good to 13-14 I would think.