I think it is grammatically correct according to the scenario.

had: had = was having. Please check this link had been used from our partner Site.

You also try saying "I didn't have the chance..." or even

“I never had the chance".

I think the word you are looking for

is

Permutations. It is a mathematical term used in Probability.

Here are the definitions: Permutation Wikipedia

Permutation dictionary. Not

to be confused with the expression

com for comparisons.