How can I get raw parameter values for a Firebase Analytics event (last 30 days) without using BigQuery?

I log a custom event from my Flutter app whenever a doctor expands the auto-interpretations. The event contains multiple identifying parameters (doctor id/name, organization id/name, test id, timestamp). Example logging function:

/// Call this whenever the doctor expands the auto-interpretations
Future<void> logTestEvent(String name, String? testID) {
  return FirebaseAnalytics.instance.logEvent(
    name: name,
    parameters: {
      'doctor_id'         : _doctorId!,
      'doctor_name'       : _doctorName!,
      'organization_id'   : _organizationId!,
      'organization_name' : _organizationName!,
      'test_id'           : testID!,
      'eventCreatedOn'    : DateTime.now().toIso8601String(),
    },
  );
}

What I need: For the last 30 days I want to pull a list of every time this event ran and the parameter values associated with each run (so I can see which doctor triggered the event and the other details). Output I want looks like a table:

Hard constraint: I do not want to use BigQuery Preferably a free/simple way (Firebase console, GA/Analytics API, or other tooling) that returns per-event parameter values for the last 30 days.

What I have tried so far

• Checked Firebase Console → Analytics → Events: I can see aggregated counts for the event but I cannot see a table of raw events with the full parameter payload.
• Used DebugView to confirm parameters are being sent (real-time), but DebugView is real-time only and not suitable to fetch historical 30-day data.
• Looked into "Register event parameter" in Firebase console to surface parameters in UI, but that gives aggregated usage and still not raw per-event records.
• (I know BigQuery is the usual approach to get raw event rows, but I can't use it.)

Environment / context

• Client: Flutter (Dart) app using firebase_analytics plugin.
• Event name: variable name above (e.g. test_expand).
• Parameters to retrieve: doctor_id, doctor_name, organization_id, organization_name, test_id, eventCreatedOn (and the event timestamp).
• Time window: last 30 days.
• Must not use BigQuery.

Any help or example code to fetch per-event parameter values or a note that this isn't possible with Firebase alone (and why) would be appreciated. Thanks!