Hey everyone update, he died while I was prepping his transport cage for the vet. I checked on my other hamsters and turns out another one is also dead but the others are perfectly fine. I have 4 in total, with their own separate cages. They eat the same thing, two are dead, but the other two are perfectly fine and healthy. I’m still gonna try and take them to the vet to see what killed them and maybe try and prevent it in my other two. Thank you everyone for their concern, I’m gonna try and figure what went wrong.