the issue with your exported game (at least the first issue) is that your dialogue is in json files, godot doesnt recognise json as a resource so when you export the game, it doesnt include them. And then when you run the game, it tries to load json, doesnt find it and crashes. But all you need to do is, open the export settings in godot, find the textbox that says “filters to export non-resource files” and add *.json to it
then when you export json will be included good luck