The idea that consciousness would just randomly emerge is absurd, this has become exceptionally clear with the field of ai where it can’t even tie shoe laces no matter how much training and experience you give it. There are only two logical explanations for its emergence

1. Unironically gifted by God

2. Every atom and particle in the universe actually has some sort of consciousness to it.

It can be one or the other or both, but it’s literally too statistically miraculous to be explained through some purely random darwinian natural selection.