Show title site in posts page home

Hi,
Can i have your advice regarding my issue?

  • as default with dummy pages WP, i have posts on first page, In my title area i have title for post that is first, so i need to have in title page name of site or title blog something …

In all pages and posts, title is ok, only on home is not ok because it shows title from post.

In my title page i have

Can someone advice me where is wrong?

Many thanks