Is there something before the big bang? A thought.
I would like to take the question somewhat sincerely, albeit with a pinch of salt.
If you want to analyse this question scientifically first we have to look at the assumptions of the question.
The biggest assumption in the question is that there is a big bang.
We have been seeing "Little Red Dots" through the recently launched James Webb telescope. These seem to be very distant quasars or active Galactic nuclei that also seem to have a red shift greater than the age of the universe.
The second biggest assumption in the question is that there is a notion of past present and future for the universe. This seems very benign and obvious at first.
But we literally seem to have no clue on how the universe or its galaxies are maturing over time. A prior assumption was that the black hole in the centre of the galaxy slowly but surely grows larger with time but again we are seeing larger black holes in galaxies much further away and in the past. Even something as simple like the spin of a galaxy has slipped our brightest minds for over half a century. This does not mean that the universe did not have a start but it definitely calls into question the hand wavy inflation to explain how universe came to be.
The third assumption is that it is a fair question and the answer is within the realm of comprehensibility of a human mind. This is again assumption that we would not see in most questions to ask, but in existential questions especially once that are so steeped in reality and data, this becomes significant. We would need an answer that would satisfy us. And the truth for us could a satire of the real truth because of our minds limitations.
Another important factor over here is the nature of empty space itself. Every time we look at it, it seems to contain more than we think it does. It can stretch and pull and have particles becoming and unbecoming inside it. All while slowing time around it and shrinking black holes.
All this together puts quite an incomplete picture of the universe. It's uncertain if it's a singular explosion then expansion in space and collapse into galaxies around black holes we're told brought us here, has problems at every step of the way. Therefore the assumptions of the question as a whole stand on weak footing.
So I think this is an important question but an ill formed question which is why it is disliked. However I think it shows the various limits of our understanding of our reality and the universe in which we live.
To summarise, yes we don't know. And what all that we don't know shows us how ill equipped we are to ask and answer this question.