How to Update Header Text

Hi there! I'd like to change the header text on my Posts page as well as the Project pages but after hours of digging, I've been unable to locate where to edit them. For example, on my Post page: https://cadalinehelm.com/?page_id=124 I want to edit "News" to be the name of the blog, "Drunk By Tuesday" as well as edit the "from the blog" text. Then on each of my Project pages it's automatically adding the text "Project Type" along with the name of the respective project. I just want the project name to display. Example: https://cadalinehelm.com/?jetpack-portfolio-type=artwork Instead of the title being "Project Type: Artwork", I only want it to display "Artwork". Thanks so much for your help!