One of my favorite sports to play and watch is golf. I love hitting golf balls in my side yard and walking to pick them up. I then repeat.
This is definitely not a high intensity exercise, but it is a great low intensity cardiovascular exercise.
Golf also teaches you coordination of your body and major muscle groups.
You'll learn how to use your hips, glutes, hamstrings, and quadriceps very well as well as your upper body muscle groups. You'll especially learn how to use your core and your obliques to pull the golf club into position as you impact the golf ball.
One of my secrets to making this a better low intensity cardio exercise is to take 10 to 15 golf balls and hit them. Now go walk and retrieve each one of those balls.
Bring them back and repeat.
I usually use a Pitching Wedge since my yard isn't so big, but you can use any golf club you want. A driver will be the most challenging if you have the room to hit a driver. You'll get more steps in between reps as well.
I recommend getting a golf flag you can stick in your yard to give you something to aim at if you have room in your yard. If you don't have much room, you can get something called birdie balls that don't travel as far.
Also get a hitting mat so you don't tear up the grass in your yard.
As you get better with your swing, you should be hitting most of the balls around the flag. Then you can hit and think about your swing as you walk to get all the balls. Then try improving on the next round.
Hope you enjoy golf as a low intensity cardio exercise. This will surely get you moving, improve balance, improve mobility, and improve coordination. I wish you the best with golf. It's a great game.