Why is my 6yr old son is petrified of death?

A bit morbid for a 6yr old I know. Unfortunately, he has come across a video about ‘death’ from some Youtubers. He has also watched a video about Jesus Christ which he is inquisitive about. We have now put a block on these types of videos (It was originally Minecraft he was watching, but they pop up). He has now over the past 6-8months become increasingly anxious, sad and angry about death. He will get extremely tearful and say stuff like ‘I don’t want my family to die’ or ‘I don’t want to die’ and become extremely vulnerable. Or the other end of the spectrum when angry it’s ‘You want to kill me!’ (Which is obviously not the case… most of time…🤣) He has stopped doing sports because he doesn’t want to leave me or his family. He keeps saying how much he hates school because he doesn’t want to go and leave us.I’ve tried having gentle conversations about this and now he is asking if he can pray to God to ask us not to be taken away. We aren’t a religious family, but I also wouldn’t stop him if he felt comfort from it. But I also don’t want to lie. I have explained as gentle as I can that death is certain in life, but I’m obviously aware this isn’t going to help any anxieties or even if I should be saying such things. I remember learning about death at about 8yrs old, so wondered if he is just that bit young and it’s really traumatising him.Has anyone experienced this? Is there any books/advice/tips/services that can help? I’m just lost at what I can do to bring him back to some life instead to worrying so much 😔 via /r/AskUK https://ift.tt/poeO7WE