This isn't true. In my country we've had 25-35 deaths in people under 45 from Covid-19. So the death rate is very very small, but its not zero.
Including deaths of people under 25. These people may have had existing co-morbidities of course, but not all of them might have known they had those co-morbidities.
If you're young you will get natural immunity from it sooner or later.
No young person had any issues.
More young people will be hurt by the vaccine than COVID.