Getting the vaccines is objectively a gamble. You are saying the equivalent of "getting insurance is not a gamble, not getting insurance is". A sales pitch for vaccines. You can weigh the sides however you like, but there are sides.Exactly. Getting the shot was not rolling the dice. Not getting the shot would be rolling the dice.
Getting vaccine shots is a bet that the odds of having an adverse reaction to the shot(s), now or later, and the inconvenience that is getting the shot(s), is outweighed by the benefit of reduced odds of suffering badly from COVID or spreading it to others.
The outcome determines how your gamble went, even if you don't get to know the answer. If you get multiple shots, and don't get sick, maybe you didn't get sick because of the shots. Maybe you just weren't going to get sick, and the shots did not benefit you, but cost you time, energy, and the uncertainty (however slight) of future complications. You will never know.
If you don't get any shots, and don't get sick at any point, you have had the better outcome. If you don't get any shots, and get sick, you have had the worse result.