count not increasing above 2 in checkWin for gomoku

Question

so i've been trying to get the checkWin method for an bot to use, BUT the win condition wont trigger no matter what

  public boolean checkWinner(int player) {
    int[] lineX = { 1, 1, 1,1};
    //int[] lineX = { 1, 1, 1 };
    int[] lineY = { 0, 1, 1 ,-1};
    for (int x = 0; x < 19; x++) {
      for (int y = 0; y < 19; y++) {
        if (this.cell[x][y] == player)
          for (int i = 0; i <4; i++) {
            int count = 1;
            for (int j = 1; j <=4; ) {
              int vtx = x + lineX[i] * j;
              // vector x = x + lineX * J (loop) | horizontal
              int vty = y + lineY[i] * j;
              System.out.println(" x: "+x);
              System.out.println(" y: "+y);
              if (vtx >= 0 && vty >= 0 && vtx < 19 && vty < 19 && 
                this.cell[vtx][vty] == player) {
                count++;
                j++;
                System.out.println("count: "+count);
                System.out.println("j: "+j);
              } 
              break;
            } 
            if (count == 5)
              return true; 
          }  
      } 
    } 
    return false;

}

any thoughts?

i've tried to change the size and value of the array, loop count, but the count wont go above 2 hence no one is winningenter image description here