"My Blog-My WordPress Blog" Isnt a generic phrase which is on everysite so its hard to understand what you mean exactly. I'm assuming you mean page titles ?
Could you post some screenshots of the issue, along with screenshots of the page in the WP admin panel so we can see what page template you are using.
I suspect your theme has a page title in its template, in which case you will need to change your pages template to Elementor canvas or Elementor full width.