You might live in a bubble, because covid is everywhere

Rapid tests that rely on nasal swabs are prone to false negatives, so a lot of people get mild symptoms like sniffles or an itchy throat, test negative, and then assume they don't have covid when they actually might

Mild symptoms don't mean mild disease, either -- there are people who never show symptoms and still end up with vascular damage. It's never a good idea to only judge a virus by its acute symptoms