Tips for working out while working in a physical job

I (f26) am struggling working out especially after dealing with peak season. I work from 1:20am to 11:50am sometimes I dont get off until 2pm if I picked up the extra shift. I will walk anywhere between 18k to 25k steps a day and I work 40 hours weekly. I did successfully gained weight (137.5 lbs) but i want to get rid of the excess fat. Any advice ?

I did unsuccessfully tried to workout during my off days. Since my job installed new machines, the work load has been heavier and been straining my back and calves more. I spent more sleeping and recovering for the next week than moving my body.