HappilyManly
Journey Man
'Upload file' if it is on your deviceBut if we went to Facebook I’d know how to insert a photo, on here it never works for me!
Or
Open the image in an app/web page then
select Share (in FB if you press on the image, the Copy link Address will pop up) - copy link to clipbard
then
use the ST image icon (next to emoji icon) to paste that link