“”looks like it cost a TON of money to build that tomb even back then... i doubt Christ’s family was that rich.”
True. IIRC, Jesus was originally ‘buried’ in the tomb of a wealthy benefactor of the family.
Here is as close to the ‘truth’ as we can get.
Jesus of Nazareth became Jesus the Christ, and upon the death of Jesus of Nazareth, maintained the physical form until Jesus the Christ ascended in appearance to heaven.
His body stayed here. Things on the material plane (redundant, I know) cannot be created or destroyed, so the body cannot just disappear from the material world.
Was Jesus dead and in the tomb? Yes. Jesus of Nazareth.
Was, and is.
This is most likely the tomb he was interred in, and the other’s may be his relatives, or some of Joseph’s.
Was Jesus reborn, resurrected from the cross, removed the stone, and appeared ‘in the flesh’ to the apostles?
Yes. Jesus Christ. He ‘ain’t’ the one in the tomb. I guarantee that.