The correct sequence in the life cycle of a massive star is:
nebula, protostar, star, super red giant, supernova, neutron star.
This sequence starts with a nebula (a cloud of gas and dust), which forms a protostar, then evolves into a star. A massive star expands into a super red giant, undergoes a supernova explosion, and finally can end up as a neutron star or black hole, depending on its mass.