If you've done the search, you've read a lot of advice about cleaning out any wood splinters, matching up the pieces, using Titebond (not an expanding glue, and especially not Gorilla glue) and proper clamping technique.
But the kind of break you have overrides all this. Photos will help.
And if it's really a cheap guitar, then if your repair attempt doesn't work, discard and replace.
If it's an expensive guitar, STOP now and take it to a qualified repair person.
"The best way to tell a lie is to tell the right amount of the truth, and then shut up." Robert A. Heinlein