Hi @dennisjover
To change the text of the tabs in the BuddyPress profile I really suggest you to install the Loco Translate plugin:
Loco Translate
Once installed, go to Dashboard > Loco translate > Plugins > BuddyPress. The first time, you’ll have to create a new language. In your case, select the language of your website. Then, search the wrords you want to change. Please find the attached screenshot to find out which string corresponds to this area.
If you don’t find this string, I suggest you click on “Synchronize”. It will automatically add the new strings.
Cheers,