You be among the around 10% of the population with the HLA allele, which makes it likely that your infections are asymptomatic.
It is a genetic lottery. If you have the right genes, Covid is a walk in the park.
If you have the wrong genes, consider your role in society ended.
https://covid19.nih.gov/news-and-stories/variant-immune-gene-linked-lack-symptoms-during-covid-19