View deleted text msg iPhone XR

Assuming you don’t house your messages in iCloud, messages are saved on your latest iPhone backup that was created while the messages were present. Restore the backup to retrieve the messages (and other data that was present at the time).

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

No you can't

Delete a message or conversation

When you delete a message or conversation, you can't get it back. So make sure that you save important information from your messages.

To delete a message:

1. In a message conversation, touch and hold the message bubble that you want to delete, then tap More.
2. Tap , then tap Delete Message. If you want to delete all messages in the thread, tap Delete All in the upper-left corner. Then tap Delete Conversation.

To delete a single conversation, swipe left over the conversation that you want to delete, tap Delete, then tap Delete again to confirm. To delete more than one conversation, open Messages and tap Edit in the upper-left corner. Then tap the circle next to the conversations and tap Delete in the bottom-right corner.

To keep your messages for a certain amount of time, go to Settings > Messages > Keep Messages. Then select how long you want to keep your messages.