yes i use softwareserial but , usually same response

i use P2P , so my question now, it's possible that the model LORa is Lora Wan , i mean i can't change it to P2P ?

////TX

#define MY_ADDRESS 1       // Adresse du module TX
#define DEST_ADDRESS 2     // Adresse du module RX

unsigned long dernierEnvoi = 0;

void setup() {
  Serial.begin(9600);
  delay(3000);
  Serial.println("Initialisation du LA66 (TX)");

  // Configuration P2P
  Serial.println("AT+STOP"); delay(200);
  Serial.println("AT+RESET"); delay(2000);
  Serial.println("AT+MODE=0"); delay(200);
  Serial.println("AT+ADDRESS=" + String(MY_ADDRESS)); delay(200);
  Serial.println("AT+NETWORKID=5"); delay(200);
  Serial.println("AT+PARAMETER=9,7,1,4"); delay(200);
  Serial.println("AT+FREQ=868500000"); delay(200);
  Serial.println("AT+SAVE"); delay(200);

  Serial.println("TX prêt");
}

void loop() {
  if (millis() - dernierEnvoi > 3000) {
    dernierEnvoi = millis();
    Serial.println("AT+SEND=" + String(DEST_ADDRESS) + ",HelloWorld");
  }
}




///RX 

#define MY_ADDRESS 2       // Adresse du module RX
#define DEST_ADDRESS 1     // Adresse du module TX

String recu;
int rssiCount = 0;
long rssiSum = 0;
int rssiMin = 999;
int rssiMax = -999;

void setup() {
  Serial.begin(9600);
  delay(3000);
  Serial.println("Initialisation du LA66 (RX)");

  // Configuration P2P
  Serial.println("AT+STOP"); delay(200);
  Serial.println("AT+RESET"); delay(2000);
  Serial.println("AT+MODE=0"); delay(200);
  Serial.println("AT+ADDRESS=" + String(MY_ADDRESS)); delay(200);
  Serial.println("AT+NETWORKID=5"); delay(200);
  Serial.println("AT+PARAMETER=9,7,1,4"); delay(200);
  Serial.println("AT+FREQ=868500000"); delay(200);
  Serial.println("AT+SAVE"); delay(200);

  Serial.println("RX prêt");
}

void loop() {
  // Lecture des données reçues
  if (Serial.available()) {
    recu = Serial.readStringUntil('\n');
    recu.trim();
    if (recu.length() > 0) {
      Serial.println("Reçu : " + recu);
    }

    // Extraction du RSSI si format P2P
    if (recu.startsWith("+RCV")) {
      int lastComma = recu.lastIndexOf(',');
      int prevComma = recu.lastIndexOf(',', lastComma - 1);
      String rssiStr = recu.substring(prevComma + 1, lastComma);
      int rssiVal = rssiStr.toInt();

      // Statistiques
      rssiSum += rssiVal;
      rssiCount++;
      if (rssiVal < rssiMin) rssiMin = rssiVal;
      if (rssiVal > rssiMax) rssiMax = rssiVal;

      Serial.println("📡 RSSI : " + String(rssiVal) + " dBm");
      Serial.println("   Moyenne : " + String((float)rssiSum / rssiCount, 2) + " dBm");
      Serial.println("   Min     : " + String(rssiMin) + " dBm");
      Serial.println("   Max     : " + String(rssiMax) + " dBm");
    }
  }
}