how do I move pictures from messaging to photos with 13

Hello Jeepguy1,

Thanks for posting in the Apple Support Communities. I understand that you’re looking to save images sent to you in the Messages app, and I’d like to assist you. 

To save an image, tap the image, then tap the square icon with the upward-facing arrow, then select “Save Image.” It will automatically save the photo to your Photos app. 

For additional details, check out the section, “Find attachments from a conversation” here: 

Use Messages on your iPhone, iPad, or iPod touch

I hope this information is useful. Kind regards.