pages do not match template used

I’m not quite sure what the question is. If you skip the templates recommended at the beginning of the page creation process, you’ll be left with a blank page. You can then insert blocks as you like or use templates later on.

Feel free to include screenshots to illustrate what you’re referring to. See: https://wordpress.org/support/forum-user-guide/block-editor/#adding-screenshots

I think I understand that you’re missing the layout around the content. When editing the page, click the third icon to the left of the Save button at the top. There, you can activate the template so you can see it in the editor.