Facebook Messenger can crash due to insufficient RAM. Remedy this by closing other apps on your phone and restarting ...
Learn more Messenger, formerly known as Facebook Messenger ... phone's shortcut panel and tap the Wi-Fi icon to temporarily disable it. Then try using the app again. See if Messenger works ...
The image below comes from 9to5Mac and shows the privacy labels of several chat apps you might have on your phone, including Signal, iMessage, WhatsApp, and Facebook Messenger, as seen below.