Hang on a minute here please.
Now is it not va sacrifice when someone knowingly gives up their life to save another, ergo the Giver MUST die, be buried, interred, cremated and STAY DEAD, correct?
Then according to the Chrustians ( Christians) this Jesus character, who these Chrustians CLAIM to have been both the Son of God and the God incarnate as well, gave up his life to ABSOLVE US ALL of the sins we were yet to commit BEFORE we were even eggs in our mother's Ovaries or Sperm in the testes of our Father, so how exactly does that work?
If we were never born, then would not the supposed 'sacrifice' made on our behalf by this Jesus then be completely null and void plus a wasted effort as well?
Now, This Jesus, SUPPOSEDLY, knew before hand that he would die, BUT be resurrected 3 WHOLE days later, (not 2 and a bit days as the Chrustians believe btw), NOW knowing that this SUPREME Sacrifice he is going to make is NOT really a sacrifice as such because he is going to be brought back and then live on forever, then is NOT that merely BIGGEST Con-job of ALMOST ALL time, kind of like saying under his breath, " Gottya, Suckers, gottya thinking I'm dying just for you when I'm not going to dead a a door nail after all, I'll just look dead, won't rot and decay away, just be resurrected a bit later and wander off to live elsewhere where you can't go UNLESS you are 100% Dead and Buried first, sucked in big time you Mugs."

As a former Christian let me explain. We are taught that we are born sinners and since we are sinners then we should die and go to hell as punishment for being sinners. There is no way for us to get forgiveness of our own sin. God the god sent a part of god who is the God the son to be a sacrificial lamb as a sacrifice for all of us. Through the shedding of his blood we are forgiven when we believe in him. Basically you are shamed and convinced how bad you are and accept Jesus so he won’t send you to hell

It makes no sense

It seems to me the only time most Christians talk about Jesus is at Easter and Christmas. The rest of the time they go to the Old Testament, which is an old Jewish book and has nothing to do with Christianity, but in that book they can find scriptures that justify their misogyny, homophobia, racism, and anything else that supports their bias and hatred. What did Jesus sacrifice. He died for three days. Hell give me that deal, and what changed from his sacrifice, not one damn thing.

Not much of a sacrifice. Now if an atheist gives his life for you then they really mean it but if an immortal god gives up their "life" knowing they'll come back three days later then they've really only sacrificed their weekend. To be fair it is a bank holiday weekend but still surely not that big a deal

“How do Christian’s [sic] explain the significance of Jesus and his death such that he became the savior? I went to Catholic school and I still don’t understand this. Was there some sacrifice on god’s or Jesus’s part?”
Are you sure you went to Catholic school? If so, were you paying attention? Excuse me for being suspicious but your question sounds like an attempt to troll.

You are not missing anything. The entire story makes no sense.

He had to die or people couldn’t eat those delicious wafers made from his corpse

This pretty much sums it up.

It wasn't a sacrifice, just some rough sex play that got out of hand.

When Jesus died unexpectedly the Apostles needed an excuse to explain his death. So they said he was a sacrifice for sins. This allowed the Apostles to continue preaching and passing around the basket to collect money. Fishing is hard work...preaching is easier, cleaner, and more lucrative.

He died for your sins. Or something.

None of it makes any sense. Religion is nonsense as a whole.

Maybe this will help

Since it's all fiction, does it even matter?