Once a younger person dies, everyone informs about it.
Check this photo of all the cases in Spain from March 22, when Spain had 19 000 cases.
For example, the number of covid cases in people aged 40-49 is almost the same as it is for ages 50-59, 60-69, 70-79 and 80+. But check out the death rate.
Only 9 people aged 40-49 died out of 2919, which is 0.3% of their total and 1.12% of the total deaths in Spain.
But check it out for those +80. 67% of all those who died were 80+ and 87.5% of all who died were 70+.
Spain had 1 death of people aged 0-19. That's when they had 19 000 cases. Today we have almost 600 000 cases in the world, so about 30 of the deaths should be people below 20. We read about each one of them and we're under impression that youngsters die, even though they are only 0.12% of all deaths, or 1 youngster in ~850 deaths.