I can’t open my messenger and my Facebook

Hey Maria2111,

This Apple Support article has the steps for you to attempt to resolve the issue yourself. If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open - Apple Support

I have been having a similar problem and restarting my iPhone always resolves the issue for a period of time.

Please also consider providing specific feedback especially if this becomes a persistent issue for you. The more feedback we can provide to Apple the better product we will have. Product Feedback - Apple

I hope this is helpful for you,

-Scott (he, him, his)

Contact Facebook for support for their apps.