Last year around this time I was much leaner weighing around 180 pounds. I maintained a lean physique by eating a relatively low-carb diet and doing different cardio exercises roughly 5 times a week for 15-20 minutes. I'm not saying that is the the best way for YOUto get leaner, but that is what worked for ME.
This leg workout was one that I used fairly often. I trained legs twice a week with one day using heavy weight, and the other with a high amount of volume to get that awesome pump and to end the day with a burn-out. Below is the routine I would follow for my high rep/volume day.
Start with any cardio that focuses on legs for 10 min (Bike, elliptical, treadmill)
Back Squat:5 sets(100 total reps)
Tri-Set:5 sets (200 total reps)
Leg Extensions:20 reps
Leg Curls:20 reps
Walking Lunges:1-2 mins
Superset:5 sets (100 total reps)
Standing Calf Raises:10 reps
Seated Calf Raises:10 reps
Burn Out:Until failure
Back Squat:135 lbs
As always feel free to reach out with any questions or comments as I am always grateful to help in anyway that I can!