It really has nothing to do with science. If somebody claims that something called 'god' exists, it's entirely up to them to both define it and justify their belief that it exists.
Theists do justify their belief in God in their own lives but that justification does not translate well to others who may demand different type of evidence. And of course for the Bible God the Bible has been trashed for many people and so that is no justification for them.
Except for the fact that it's entirely in the wrong order. I've heard multiple attempts to bash the square peg of the creation myth into the round hole of science, and they just make me laugh, sorry.
I had a similar difficulty when I was trying to fit what the Bible said into what science said.
I did find that how people read the Genesis account/s is important.
I started seeing Genesis 1:1 as saying that God created the heavens and the earth and then relating things from the pov of the earth. There was a large ocean and thick clouds obscured the light from the sun etc. and then as the clouds started to clear, the light filtered through.
I found that science seemed to agree with that.
I then found that the order of the appearance of living things almost agreed with the order science gives.
I also discovered other things that seemed to fit.
The fit can be seen as not 100% but pretty close imo and what looks like it does not fit can be justified also interestingly.
Anyway it was really something for me and my justification of belief in the Bible and acceptance of science at the same time.
It also made me think about what is real science and what is conjecture. The journey is not over yet of course but it is good enough for my faith to have done it. Then of course along the way I did discover others, some scientists, who seem to have been down the same path.