How do I remove page titles on my wordpress theme?

My site is https://creativeonlinegenius.com/ and what I would like to do is remove the title. If you see it says home to the left. If you click on any of the other pages for example the contact page it says contact to the left but to the right side of the page you see it says home/contact. I need to remove these things from every page but I am unsure what code I need to remove from where. Help is greatly appreciated thanks.

Also on the left side of every page it has a cellphone icon and says the words “default contact details” but I am unsure how that got there or how to get rid of that either.