RESOLVED: How to manage templates correctly

Hi all. I have a question. I want to create Title Section Template and want it to appear on all pages of my site. And when I edit this template changes should be applied on all site where this template is. I have tried different options but nothing works. Is it possible to do?

I’m not sure, but I think if you want it to be on top of pages below header, you can add it to the header template (if you don’t want to use sticky header).
Or you can add it manually in ALL your single/archive/etc. templates of your site.

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Thank you for your response. Problem solved. It was my mistake, I should have applied the changes when the class was active. Everything works perfectly.