I think there are a lot of factors that go into Liam Payne's death. From what we know, he was on multiple illegal drugs, acting out in public, and desperate for attention in the moments leading up to his death. Your claim is true that he was on drugs and definitely connected to his death but I don't think anyone, besides him, would know the real reason he is no longer with us today. I would recommend finding more articles that back up this claim.