The Andromeda galaxy is 2,538,000 light years away, so if we view Andromeda from a telescope, we see Andromeda how it was 2,538,000 years ago. Now the diameter of the visible universe is 92 billion light years so if we say that we are at the center so the radius is 46 billion light years. So, if we see the farthest we can from our point, that will be 46 billion light years, so it means that we have seen the universe how it was 46 billion years ago, so why can't we say that universe was born 46 billion years ago?
And if still someone argues that 13.8 billion years ago universe was born then we should have seen the universe of how it was even before the singularity.
And if my logic of 49 billion years seems right then the thing we say that universe was born 13.8 billion years ago should be wrong, shouldn't it?
Hoping for a excellent answer with excellent explanation! :)