Just because driving a car isn’t risk free doesn’t mean you outlaw cars. You take the sensible precautions that are available and accept that a life worth living involves a certain amount of risk.
We don’t know what happened in the alternate universe where there were no seatbelt laws. Maybe there are people here who died because they stubbornly refused to ever wear a seatbelt because they had taken a public stance against seatbelts and made not wearing a seatbelt into a noble fight against tyranny. Maybe in the other universe they’re still alive because they were able to come around and change their mind without feeling like they lost a fight and were admitting defeat.
But I guess we’ll never know, because if you think something is a good idea what you should do is immediately use the government to coerce everybody into doing it under threat of fines and punishment.
But we have speed limits, stop signs, seat belt regulations, airbag requirements, crumble zones, crash tests, driver training and testing, significant drunk driving laws, ...
If we had equivalent sensible precautions for COVID as we have for cars, mask mandates and vaccination requirements would be the minimum and carry significant penalties.