Privacy policy Target number

My app does not collect any information, but I have no way of knowing what exactly are libraries doing.
All the libraries that I used in the app are:

com.google.android.gms:play-services-ads:20.6.0
com.squareup.retrofit2:retrofit:2.6.4
com.squareup.retrofit2:converter-gson:2.6.4
com.google.android.play:app-update:2.0.0
com.google.android.material:material:1.6.1
androidx.recyclerview:recyclerview:1.2.1
androidx.legacy:legacy-preference-v14:1.0.0
nl.dionsegijn:konfetti:1.3.2
org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.6.0
androidx.multidex:multidex:2.0.1
androidx.work:work-runtime:2.7.1