I think you just answered my question in post #32….
The answer is “yes” we have, but it’s not because all the possible combinations have been used up, it’s because maybe 1/3 of the possible combinations are eligible for use.
Aside from the first 5 numbers not being random, there are combos that are not used. For example triple repeats (“000” or “777”) are not used. (The rules on this and others have changed over the decades.)