How to achive this counter animation with some glow effect in flutter

Question

How to achieve this animation in a flutter

As I am able to achieve the below design (Below image shown) design but it's not matching our requirement, Thanks in advance.

code for above screenshot

class CounterTimerPainter extends CustomPainter {
final Animation<double> animation;
final Color backgroundColor;
final Color color;
final double radius;
final int timer;

CounterTimerPainter({
  required this.animation,
  required this.backgroundColor,
  required this.color,
  required this.timer,
  required this.radius,
}) : super(repaint: animation);

 @override
 void paint(Canvas canvas, Size size) {
   var _paint = Paint()
    ..color = backgroundColor
    ..strokeWidth = 5.0
    ..strokeCap = StrokeCap.round
    ..style = PaintingStyle.fill;

  final center = Offset(size.width / 2, size.height / 2);

  final _rect = Rect.fromCircle(center: center, radius: radius);
  final double startAngle = math.pi * 1.5;
  final double sweepAngle = animation.value * 6.2;

   canvas.drawCircle(center, size.width / 2.0, _paint);
   _paint.color = color;

   canvas.drawArc(_rect, startAngle, sweepAngle, true, _paint);

   final textSpan = TextSpan(
    text: "$timer",
    style: TextStyle(
      color: Colors.white,
      fontSize: radius * 0.8,
      fontWeight: FontWeight.w600,
   ),
  );
  final textPainter = TextPainter(
    text: textSpan,
     textAlign: TextAlign.center,
    textDirection: TextDirection.ltr,
  );
  textPainter.layout(
    minWidth: 0,
    maxWidth: 100,
  );

   final textCenter =
    Offset(size.width / 2 - (timer < 10 ? 25 : 40), size.height / 2 - 35);

  textPainter.paint(
    canvas,
    textCenter,
  );
}

@override
bool shouldRepaint(CounterTimerPainter old) {
  return animation.value != old.animation.value ||
      color != old.color ||
      backgroundColor != old.backgroundColor;
 }
  }