When I receive information from a source external to me, it’s precisely the opposite of a subjective view. So no, not solipsism.
And nothing about the relative size of humans or galaxies makes any difference as to the plausibility of whether or not God exists.
The record in the Bible stands alone compared with all other religious texts in that it is consistent with general historical and archaeological records.
The evidence for God’s existence found in creation—everything you and I experience—in combination with the particular strength of the evidence of Christ’s resurrection is overwhelming in comparison with anything related to any other religion.
Mythology and the like have a very distinct character in comparison with any historical record. This difference is not difficult to define by simple common sense or to establish through scholarly analysis. Texts from other religions such as Hinduism, Buddhism and Islam each fall into the genre of mythology, or something like mythology—not history.
Imagine the luck you must have, out of all of the homo sapiens who have ever lived, to have been born in a Christian country and exposed to the right type of Christianity at the right time in your life, in the exact way that it is meant to be believed in order to reach that dimension of afterlife.
What a wondrous coincidence that the religious beliefs that you hold, out of the many thousands of options, just happen to be the right ones, especially considering the punishment for NOT believing the right religion.
That's the solipsistic part.
As for the the general historical and archaeological record, we've already established that that's mostly bunk. Even the gospels can't agree on the central defining moment, the Resurrection, as far as who was at the tomb, when they were there, what they found, and where Jesus appeared. Not to mention the gospels were written years after (in some cases decades after) the supposed event, an event that appears nowhere outside of the Christian holy books, and claims an earthquake and a zombie apocalypse that there's no record of.
The Christ myth theory or the historical Jesus; take your pick. There's no evidence that stands up to cursory scrutiny that supports any of the supernatural events of the Bible, and are much more aligned with the myths of the Bronze and Iron Ages.