Cardio and attempted leg day

Today I worked out cardio for approx 75 minutes. I should have cut it down to just 30 minutes. I attempted to work out legs but was only able to do the following:

2 sets of squats (45lb plate on each side plus bar = 135lbs) 10 reps x 2 sets.
This was followed by calf raises and quad press 10 reps x 3 sets on the machine. I will definitely be more aware of the time I spend on the treadmill and conserve energy when attempting a leg workout. I will re-attempt tomorrow as I dont feel I got a good leg workout.
After my time in the gym (approx 2hrs) I ended with some static stretching of my hamstrings, calf's, and lower back.