Apple

Does anyone know how (or is it even possible) to fix this. I’m a construction painter and my watch said I walked over 5000 steps but in reality I was sanding a door by hand😅. I bought the thing so I wouldn’t have to have my phone on me in the construction site but could still get the fitness app to track. But this kinda just makes it worse sense that’s nowhere near accurate. Also it says I made like 1000ish steps when I was sewing a some duvets.

So any ideas how to fix this. I’d still like to have it on my arm cuz I wanna track my heart rate too.