JESUS EXPIA PECADOS?

Was it true that the Levitical sacrificial system 'pointed' to Jesus and his supposedly vicarious death for the sins of humanity? Was there any atoning virtue in the way Jesus was supposedly killed on a Roman cross? How do Jews today atone for their sins, given that there is no longer a temple or sacrificial rites? Would they have to resort to Jesus and his supposedly vicarious death for such purposes?