Best NON smartphone I can buy?

As the title says: I want to switch to a non-smartphone. I’m really fed up with how much time I waste on my smartphone. I’ve tried everything to limit my use, but nothing works. That’s why I want to get rid of it completely as quickly as possible!

My attention span is shit, and I just feel like I’m getting dumber.

About a year ago I bought a non-smartphone via bol.combut it wasn’t really practical. When sending messages, I only had an inbox, without a clear contact list to choose from. That made it super inconvenient, and I always sent to the wrong people because of it…

That’s why I’m now looking for a simple mobile phone (not a smartphone) where you DO have a clear contact list and can easily send messages to your contacts.

Does anyone have any good recommendations?
(I literally just want to be able to make calls and send messages easily.)