Share function not working

Hello everyone,

I am using iPhone x with iOS 13.4.

Recently, after the last update, I have not been able to use the share function (from notes or pictures for example), when I click on the share button, nothing happens, I don't see any sharing options (like I used to) and the phone becomes slower somehow.

I tried googling the problem but I couldn't find anything related.

Does anyone here have any idea what's the problem and how to fix it?

Thank you.