Best value is around 300-400 $ But it depend on what you need on your phone, and you need to choose well.
https://www.kimovil.com/ has some good comparison.

And with hyperos it’s getting ridiculously hard to root

You have good brands on aliexpress, you just need to be careful before buying. At least better than amazon.
And yeah delete that app, you don’t need theses fake 10 cents savings with their shitty coin.

Is it possible in older version ? Since I’m rooted I can block then but I believe it wasn’t possible before. I had an app in android 8 I think that did that without root access, but it doesn’t work anymore in android 10.

I’m talking about notifications like low battery, do not disturb, keyboard open, connected to a vpn …