If we can avoid massive collective issues that would be appreciated as there is very little agency the individual has to address those and that helpless ess can often extend to the more solvable individual matters we all grapple with but also occasionally rise to conquer.
You’ll want to add weight and grip. I’m not certain what the wheels are like, but you may be able to either replace them or modify them for better traction. I’d see if you CSB find all terrain bike tires and cut them down.
Weight wise, you’ll need to play around and see what you can add without hindering movement.
Counter suggestion, kill off the grass in the area and replace it with a creeping ground-cover. You won’t have to mow, it adds ornamental value, and it’s better for local wildlife.