

Murder requires intent. Manslaughter is when you kill someone by accident.
so, unless you were cooking meth with the intent of killing your neighbors with an exploding house, it’s manslaughter ( or attempted manslaughter) instead of (attempted) murder.

that usually only happens in extreme cases when there is an expectation of “reasonable foreknowledge” that what the person was doing would result in the possible deaths of others. for example: in some states, if you drive drunk and kill someone (or more) in a collision, you can be charged with murder rather than vehicular manslaughter. this usually only occurs if the crime was especially egregious, like if a drunk driver runs over a group of children.