Why are wasps dying in my garden?

I know this is a subreddit for bees but I couldn't find any other subreddit to talk about this. So while I was walking there was 5 or 6 wasps lying on the floor dead. Because of my little knowledge of wasps and bees I assumed that the bees that collect honey from my garden killed them as they thought they were trying to attack them but it just seems so unlikely. Also while I was walking around my garden I saw a wasp injured not dead but it couldn't fly or walk so I helped her out but it died right after that. I'm so confused what is killing these wasps?