People confuse types of ignorance that hurts clear thinking here.
A truly ignorant person is one who knows only one way, does not know of any other way.
In today’s world, an extremely rare case. Maybe the inner amazon tribe they recently found that has never had outside contact with the world would fall into this category.
Contraception (for example) is a choice, therefore, it is not ignorance as above because there is a known other way(s).
Choosing not to learn about the topic, but blindly going with the best advertised / most convenient, does not create ignorance as above.
Same with what you know about God or the way you worship or do not worship God. Actively doing what you are doing is a choice, even if you’ve always done it, there was a point in time it became a choice in your life.
There will be a day when even the most ignorant in the truest sense, will be presented with the truth and have to make a conscious decision on it. That’s the nature of perfect love, it can’t force.
Addressing the ‘chance’ aspect -
We hope for mercy, and hope we continue to actively say ‘yes’ to a heavenly invitation through the only way we can in our nature today, words and deeds.
A great guide is from the prayer Jesus taught, if we want that mercy after death, we better be showing it today to all who we contact and ‘forgive those who trespass’.