Android Studio – How to get the xml files of an apk file back to how it was?

About 1.5 years ago I uploaded my app (made in Android Studio) to the Google Play Store. During the period between then and now, I’ve been trying to make some other apps and during the development of one of those apps I did something to my Android Studio which made it crash or something. I’ve lost my code but got the APK file, so I decompiled it using decompiler.com. This gives me the Java code back nicely, but there are an incredible amount of XML files seperated over different folders. Is there any possibility to merge these together to get the original XML code back again?

Thanks in advance,

Koen