What if Frieza never destroyed the sayains?

Bardock's Death

Frieza may have been killed by the sayains, that is true, but he still had an army. Once they learned of Frieza's death, they got mad and sent their strongest legion, the Ginyu Force, lead by Captain Ginyu, to kill whoever destroyed Frieza. They arrived on Planet Vegeta, and targeted King Vegeta immediately, because he is the king, so they assumed he killed Frieza. They stormed the castle and killed all of the guards. The sayain army just got done a meeting, but Bardock stayed extra to talk to King Vegeta about Frieza's army, and the possibility that they will come to kill him. King Vegeta didn't listen, and because of this ignorance, he caused his best soldier's death, Captain Ginyu searched everywhere for King Vegeta personally, to have the satisfaction of killing his masters murderer. He finally found King Vegeta and sent out a Milky Cannon beam, but before it could hit King Vegeta, Bardock jumped in front of the beam to save King Vegeta. King Vegeta got out of the way and charged his Explosion Wave to full power, and attacked Captain Ginyu in rage. He had killed Captain Ginyu.