This could solve the problem temporarily. I had the same problem with my own phone and it appears to be a material problemsproblem, many recent updates are incompatible with some phones (it is the case for wikoWiko phones). Bypassig Bypassing the play storePlay Store and installing a previous update can work.
For whatsappWhatsapp, you will need a previous version than the actual one (2.18.64), but that will be older than the 2.18.0, otherwise whatsapp, Whatsapp won't let you start the app.
For example downloading this version and manually install worked for me: https://apkpure.com/whatsapp-business/com.whatsapp.w4b/download/164-APK
EDIT:
Now this version is considered obsolete by whatsappWhatsApp too. The only way to continue using it for me was to set the date of my phone to a previous date that the date showed on whatsappWhatsApp saying "This version of whatsappWhatsApp is obsolete since date".
I hope this problem will be fixed later because it is unsafe to install previous versions. Generally, generally updates include bug and security fixes.