Question about Outlook Express

I have outlook.com email and also a second email that is gmail.com.

For some reason when i send email from my outlook account to gmail account in the upper right side it shows a photograph of mine that is propably taken from a social media like Instagram or Facebook.

i've searched but i couldnt find any solutions to remove it. 

i olny tried to to do this:  i went on More Email Setting-> Reading Email->content from third-party networks and i choosed Dont show public content from third-party networks but nothing changed.

What can i do to hide or delete my personal photo?

Note that its not my outlook photo as i said before its propably taken from a social media.

Thanks for your time.