Why are activities written with a black letters not present in profile?
Only events show up on your profile.
Based on what @James_Zwift said, in your top picture (the Activities page) the blue ones (links) are linked to the Zwiftpower event page. Since your personal rides do not have a Zwiftpower page, they are just listed (no link, though a link to the Zwiftdotcom activity page would be nice! wink wink nudge nudge).
The bottom picture (main screen of profile page) shows just your events/races.