I offer these thoughts without any "head bashing". You are entitled to your own beliefs and opinions.
One problem with the more literal interpretation of Genesis is the word "day". It appears quite clearly ... On the first day, On the second day.
So let me ask you .... what Day? Genesis says the planets were not created until Day 4. But a "day" can only exist when Planet Earth is rotating in the light of the Sun. Therefore, the first three days cannot possibly have existed, if you take a literal interpretation. Do you see why that is a problem? ...
If I may share a thought?
The "light" of Days 1-3, are the glory of God itself, as shining from the face Jesus Christ:
2Co 4:4 In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.
2Co 4:5 For we preach not ourselves, but Christ Jesus the Lord; and ourselves your servants for Jesus' sake.
2Co 4:6 For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.
God is light:
1Jn_1:5 This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.
Rev_21:23 And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.
&c.
Jesus is even called the "Sun of righteousness", the "Light" of the world:
Mal_4:2 But unto you that fear my name shall the Sun of righteousness arise with healing in his wings; and ye shall go forth, and grow up as calves of the stall.
Joh 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
Joh 1:2 The same was in the beginning with God.
Joh 1:3 All things were made by him; and without him was not any thing made that was made.
Joh 1:4 In him was life; and the life was the light of men.
Joh 1:5 And the light shineth in darkness; and the darkness comprehended it not.
Joh 1:6 There was a man sent from God, whose name was John.
Joh 1:7 The same came for a witness, to bear witness of the Light, that all men through him might believe.
Joh 1:8 He was not that Light, but was sent to bear witness of that Light.
Joh 1:9 That was the true Light, which lighteth every man that cometh into the world.
God conceals Himself in thick darkness [wraps in waters, like clouds], but can reveal that glory.
Deu_5:22 These words the LORD spake unto all your assembly in the mount out of the midst of the fire, of the cloud, and of the thick darkness, with a great voice: and he added no more. And he wrote them in two tables of stone, and delivered them unto me.
Notice, that Genesis is the history of the original of natural days of the 7 day week, for the natural comes first, and later the spiritual:
1Co 15:46 Howbeit that was not first which is spiritual, but that which is natural; and afterward that which is spiritual.
Without the natural first, the spiritual or even symbolic cannot be understand without the foundation of the natural. For instance, there was a natural lamb slain in Genesis 3, and later comes the spiritual Lamb, Jesus Christ. Metaphoric days cannot be understood without there first being natural days.
Also, 'light' is more than sunlight, but is what some call the entire 'electro-magnetic' spectrum.
God said in Exodus, that He literally created in 6 days, and rested the 7th, and even ties it to human experience, since as Jesus said, the sabbath of Creation was made for the man:
Exo 20:8 Remember the sabbath day, to keep it holy.
Exo 20:9 Six days shalt thou labour, and do all thy work:
Exo 20:10 But the seventh day is the sabbath of the LORD thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates:
Exo 20:11 For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.
Mar 2:27 And he said unto them, The sabbath was made for man, and not man for the sabbath:
We do not have to guess about Genesis at all, when we prayerfully ask God, and study His word as instructed, Isa. 28:10.
I pray that this sheds some light on Genesis. There is the natural in Genesis, and then there is great material in the spiritual there dealing with salvation [for sinners are in darkness [even as the mind/heart is encased in water in darkness and is made of earth, think about your brain where it is, what it is], without form and void, and the Gospel brings the light, and reformation and life, and each day from the natural, also explains the spiritual events of the Gospel upon the individual, as well as the whole world], but the one does not negate or erase the other.