In 2020 there were 448 events at the Olympics, let’s round up to 450. Each event gives 3 medals, for a total of 1350 medals. The Olympics are held every four years, so that 337.5 medals are awarded in an average year.
There are about 8.1 billion people in the world. On average, 0.000004 % of the worlds population receives an Olympic medal each year.
If this were a completely random yearly lottery, and you lived for 100 years, you would have about a 0.0004 % chance of winning an Olympic medal in your lifetime.
I would count myself lucky if I won that by the time I was 50.