It seems like you misunderstood the generation process and mixed it with using the generated profiles.

To create baseline profiles, you need an Android 13+ device:

https://developer.android.com/topic/performance/baselineprofiles/create-baselineprofile#create-new-profile-8-1

To use the baseline profiles in the app, you need a device with Android 7+:

https://developer.android.com/topic/performance/baselineprofiles/overview