To send a standard text rather than a message through Messages/iMessage on a per-message basis, just do the following on your iPhone:
Tap and hold on the message you want to send as a text. From the pop-up menu, select "Send as Text Message".
Note: Sending a message to a non-Apple device will always be sent as a text, at least unless the other user has an Apple messages compatible app running (unlikely as of 2023).
I usually write a blog post about once a week. The latest post can be viewed here: No More Nukes?: I can make an argument both ways about whether nuclear weapons are good or bad. (posted 2025-06-23 at 15:02:39). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2025-05-31 Respect the Flag: Find me a Maori flag and I will burn it..