Crossbow

So idk where it all started but one day i was talking with my friend walshie about random stuff and we suddenly started talking about how sick it would be to have a crossbow. But the discussion made me think that maybe a crossbow woldnt be ithe ideal weapon because you manuely have to reload it bu then the question came up: Do you manualy reload your crossbow or are there crossbows that can reload themselves. It's actually a good question and an interesting topic to talk about. If anyone can answer this question with a good example of a crossbow product then that would actually be most appreciated!