Can't Connect to DFPplayer on Arduino Every Board

Projects General Guidance
2

Do you mean Nano Every ?

If so, the Nano Every has an additional serial port (TX1/RX1 pins) and there should be no need for SoftwareSerial. Connect the player to the TX1/RX1 pins and try below sketch.

#include <DFRobotDFPlayerMini.h>

// Create the Player object
DFRobotDFPlayerMini player;

void setup() {
  // Init USB serial port for debugging
  Serial.begin(9600);
  // Init serial port for DFPlayer Mini
  Serial1.begin(9600);

  // Start communication with DFPlayer Mini
  if (player.begin(Serial1)) {
    Serial.println("OK");

    // Set volume to maximum (0 to 30).
    player.volume(30);
    // Play the "0001.mp3" in the "mp3" folder on the SD card
    player.playMp3Folder(1);

  } else {
    Serial.println("Connecting to DFPlayer Mini failed!");
  }
}

void loop() {
}

Note: no experience with the dfplayer or the Nano Every