ubuntu – my laptop can’t discover bluetooth devices neither be discoverable

I’ve just installed Ubuntu 20.04 and Bluetooth is working fine but when I try to discover my phone my laptop can’t find any device and I tried discovering my laptop in my phone but can’t either find my laptop. and then I find some posts that tells to check the software and updates setting for drivers and so but found only one driver :

Software and updates settings Bluetooth settings
Bluetooth Adapter

and I can’t find any solution to fix this problem ,can anyone suggest some solutions to me , I am a new Ubuntu user so I can’t fully comprehend what to do