“And I look for the resurrection of the dead, and the life of the world to come. Amen.”
We “look for the resurrection of the dead” refers to our own resurrection. What that means is not clarified, but we can safely assume it is a spiritual resurrection into a spiritual body.
We “look for… the life of the world to come.” This is probably referring to heaven. It could also be referring to an earthly existence on a new earth. None of this is defined, so interpretations are open.
I would tend to want to leave questions about the future in God’s hands. We can’t even agree about the past, I doubt we will be any clearer in the future. We really do need humility.