no siri in Settings/ General on my iPhone 13

Siri is not in Settings > General. It is rather in Settings > Scroll down to “Siri and Search” or “Apple Intelligence and Siri”, whichever you see.

Hey there! Just a quick check to see if Siri is turned off under the content and privacy restriction setting in Screen Time. If not, you could try resetting all your settings. Don’t worry, it won’t delete any data - it’ll just go back to the default settings.