i walked for 2 hours but fitness app and Apple Watch shows 87 minutes

i walked for 2 hours but fitness app and Apple Watch shows 87 minutes. Attached screenshot. This is pathetic as the cost I paid in India for Apple series 6 is 44k and in USD it will be close to $600.00. I did reset my Apple Watch thrice, deleted fitness app and reinstalled again, tried switching off both my iPhone and Apple Watch, tried air plane mode, reset fitness calibration data, all was done and it’s a total waste. Need an answer from Apple for the large amount of money spent in purchasing this product and resolution to fix this issue

Screenshot below