Don't see Visual or Text when add post

Hello, I just started my website. Posted two posts (youtube link). I simply copied and pasted the links in “Visual” and the URL disappeared and the image of the youtube video appeared and everything was fine.

But for my third post, I can’t see the option “Visual” or even “Text”, I only see page builder and when I copy and paste the youtube link, nothing appears, nothing is happening.

Please help me.

Thank you