And taking it even further, maybe they still exist, but have advanced so far they are undetectable to our simple minds and senses, similar to how an ant or bact

And taking it even further, maybe they still exist, but have advanced so far they are undetectable to our simple minds and senses, similar to how an ant or bacteria has no idea about our existence. Maybe there are millions of advanced species that we can't detect, considering that there are millions of species we are aware of, and statistically it's unlikely that we would be the most advanced.