How to extract a raw apk out of installed application?(Raw for reverse eng purpose)

So I developed an application but my hard drive failed and I lost access to project resources, but I had it previously installed on my phone through android studio debugging process. Now I want to extract a raw apk version out of my phone, Is there any way? NOTE that any regular apk extraction through Google Play applications outputs a ~700kb apk of my project that lacks resources and cant be reversed, while it has to be ~4.4mb.