There are no written records about Lapu-Lapu's death. Some people claimed that he have died in the battle while some are saying that he died in old age but they have no proof.
And according to historian Prof. Xiao Chua it is true that Magellan died in Cebu but he never died at the hands of Lapu-Lapu. He also said that contrary to the depictions of his statue Lapu-lapu was old and no longer muscular when his men killed Magellan.
Prof. Van Ybiernas also added that the writers of our history missed some other details because there's so much that's happening that they only chose what they have written. He also said that the misinformation in history will not be purely considered as hoax it's just that the information was not accurate and not 100% true.