Sorry, you don’t get to argue modern physics and declare young-earthism, any more than you get to argue modern medicine and declare that disease can be cured by bloodletting.
Maybe you’ve not heard this fairly recent perspective on Einstein’s relativity and the big bang theory?
from wikipedia re: Russell Humphrey...
“Humphreys’ book, Starlight and Time, presents an alternative cosmological model to the currently accepted Big bang theory, that attempts to solve the Distant Starlight Problem.
Its thesis is that the Earth is about six thousand years old, and the outer edge of an expanding and rotating 3-dimensional universe is billions of years old (when measured from earth).
It proposes using the principles of relativity to postulate that time ticked at different rates during the universe’s origin.
In other words, according to his theory, clocks on earth registered the six days of creation while those at the edge of the universe counted the approximately 15 billion years needed for light from the most distant galaxies to reach earth. The model places the Milky Way galaxy relatively near the center of the cosmos.”
Now if you assign 7-8 billion years for the 1st creation day and add half again for each subsequent day, the result is 13.75 - 15.75 billion years of apparent age for 6 days of creation w/ 24 literal hours transpired each day.