Apps in my device are crashing, couldn't open most apps
Try to update Android system webview app to solve the issue.Its affecting all mobile phones not only Asus.
Update Android System webview app from playstore.
This should fix your problem.
Solution: buy new device, one that's not from asus, or at the very least not a RoG product.
The issue was across Android Phone and seem to have solved now. The comment shared by Abi1797 and AmitGarde is the solution.
If you are still facing the issue check below link which Google has shared via tweet:
I don't want to warn or ban you here because Zentalk is a place for our beloved ASUS Phone users. But, you have already made a lot of threads sharing your view and criticism which is being addressed. I hope you don't share your negative feedback where it's not required. Hope for your kind cooperation. If you have any issues, do PM me.