My iPhone 5 not used applications whatsap FB etc

The iPhone 5, released by Apple more than 10 years ago, cannot be updated further than iOS 10.3.4. This iOS version is six years out of date.

Most application developers do not keep versions of applications supporting such ancient operating systems.

You aren't going to be able to download and use any apps on the iphone 5.

It is to old to support any recent version of iOS.

The iPhone 5 is too old to run the newer iOS versions that you need.

Time for a new phone.