Need Help Understanding and Developing Simple Mobile App Development (Ionic/Angular) Premade

I am developing a mobile application using an Ionic Framework starter and need assistance in understanding the underlying code and recommending how to get the job done with the features I want. I have a minimal understanding of the code, but am unable to execute what I need. All it would take is someone with a better skillset and a few lines of code to get it working properly. I'm attempting to delete a thread connected to FireBase by pushing a function, but I don't know what to do.