I know, but I bought the glue gun after reading this is such a great thing, so I thought it is universal :)
There are hundreds of different glues depending on various factors like what material is being stuck, what temperature your using it at, what temperature the "fixed" product is going to live, what it is going to be in contact in eg oils. There is no one size fits all glue.
You need a strong plastics glue for stuff like that. Glue guns are more for arts and crafts, where you don't need a superstrong bond. The glue after drying is pretty easy to remove so won't withstand too much force. Think of it more like school glue.
It was a joke and it went way over your head (shock) XD