Why there is no more button on my messages?

Sorry. I still don’t quite understand which buttons you are referring to. Are you saying that when you open Messages on your iPhone and filter is set to All Messages, you see a list of your messages but do not see the ones at the top of my screen shot below?

It would help if you could tell us:

1. Which screen is missing buttons? How did you get there?
2. What is the name of the buttons that are missing? What are you trying to do that you cannot?

Can you please describe, in detail, the button you are referring to? Also let us know which iPhone you have and what iOS it is on. We’d like to help if we can.