In all probability, these miracles were ascribed to Jesus.
What I mean by this, is that they were added to explain allegorical content.
Let's look at the story of Noah's Ark. We have a simple yet implausible story of it raining for several days. Yet this story becomes more complicated when we understand that most cultures have this same stort handed down. That is to say, it happened in some form. It's a cultural memory. And what makes this weird is that some of these stories are centuries apart. There are three major theories about this story being a stand-in for literal event, and one theory besides that.
- This story is not about an actual flood. It's about redemption, and how God or the gods saved people who were depressed and unable to function
- This story is not about a literal flood. There was some sort of cataclysm (in some cases, an ancient nuclear war, in others a giant asteroid) that smashed off parts of Mars, turning it lifeless and forcing the human race ro move. This would explain why humans have repeated landmarks of what looks like monuments on Mars (supposedly there's a Stonehenge-like structure, for instance)
- This is about human life prior to their evolution to land. This is a racial memory of life underwater.
- The sinking of Atlantis or Mu.
Your mindset is like a child who can only see things in terms of "no, it was a lie," or " yes, it literally happened this way. "
But miracles aren't about turning water into wine or feeding five thousand people. That's a magic trick, if that's all there is. They're about what the miracles REPRESENT. People don't turn to Christianity because they are gullible and believe in fairy tales (or they'd believe in fairy tales). They believe in Christianity because they have met the person of Jesus in their life. Someone turned the mundane (water) into exciting (wine), and made their dreary life worth living. Someone showed them they have enough (feeding 5000).
Nobody believes a bit of fish and some bread can feed so many people. But the miracle was that people in the crowd opened their hearts and gave more bread and more fish.
Likewise, ask a divorced/widowed woman why the story of the woman at the well resonates with her.