Lost images after a migration to WordPress

Hi. Newbie here.

Backstory: I migrated from Blogger to WordPress a few months ago. I have no code experience at all so I hired someone to do it for me, without understanding what this would require (self-hosting, etc.)

The migration seemed seamless, but in the last week I’ve just noticed that nearly all my images from the Blogger site have disappeared.

In edit mode I can see that the image links are all broken and link back to a blogger address. Is there a way to fix this? Anyone have experience with this issue?

Example of missing images: https://www.possessionista.com/2010/07/pretty-little-liars-please-do-talk-about-me-when-im-gone.html

Address of broken link: https://4.bp.blogspot.com/_MGDeA2my0i8/TE-aWoP0iLI/AAAAAAAAHgc/jiSTdPRd5xg/s1600/rebeccataylor.jpg