BuddyPress.org

@rootcr8r not sure if anyone has created video tutorials for them.

@rootcr8r You can override single member profile template inside child theme

Template Hierarchy

/buddypress/members/single/ folder contain all files
https://github.com/buddypress/BuddyPress/tree/master/src/bp-templates/bp-legacy/buddypress/members/single

@rootcr8r it’s theme-specific, try to inspect it.
https://developers.google.com/web/tools/chrome-devtools
When you want to work with the DOM or CSS, right-click an element on the page and select Inspect to jump into the Elements panel. Or press Command+Option+C (Mac) or Control+Shift+C (Windows, Linux, Chrome OS).

@rootcr8r Could be caused by a variety of reasons. Have you tried changing your theme to the Twenty Nineteen theme to see if issue is resolved? If not, then have you tried disabling all plugins except BuddyPress while on the Twenty Nineteen theme?