If you understand what the word Yom means then it’s clear that the whole creation process was 6 days which would make the earth just 5 days older than Adam
Maybe you've never read the Bible before?
Genesis 1:1-3 NRSVUE
[1] When God began to create the heavens and the earth, [2] the earth was complete chaos, and darkness covered the face of the deep, while a wind from God swept over the face of the waters. [3] Then God said, “Let there be light,” and there was light.
The creative actions of God do not begin until verse 3. God creates through the spoken word. And that's how every single creation day begins.
And God said.
Look at every single creation day.
Genesis 1:3 NRSVUE
[3] Then God said, “Let there be light,” and there was light.
[6] And God said, “Let there be a dome in the midst of the waters, and let it separate the waters from the waters.”
[9] And God said, “Let the waters under the sky be gathered together into one place, and let the dry land appear.” And it was so.
[14] And God said, “Let there be lights in the dome of the sky to separate the day from the night, and let them be for signs and for seasons and for days and years,
[20] And God said, “Let the waters bring forth swarms of living creatures, and let birds fly above the earth across the dome of the sky.”
[24] And God said, “Let the earth bring forth living creatures of every kind: cattle and creeping things and wild animals of the earth of every kind.” And it was so.
[26] Then God said, “Let us make humans in our image, according to our likeness, and let them have dominion over the fish of the sea and over the birds of the air and over the cattle and over all the wild animals of the earth and over every creeping thing that creeps upon the earth.”
You see. In the Beginning when God began to create the heavens and the earth, the earth was already formless and void.
And Then, subsequently, God said. Let there be light.
The Bible never says how long earth was formless and void prior to God's creative acts, in which case, the geneologies becomes completely meaningless to the age of the earth.