If you don't have access to a leg curl machine, try the inverse leg curl on lat pull-down machine, an isolated pull exercise that targets your hamstrings.
Use the barbell front box squat to strengthen your front squat strength. It's also useful if you have knee problems, as it requires less weight.
The inverse leg curl (aka bodyweight or Nordic hamstring curl) is useful for working your hamstrings in the absence of a leg-curling machine.
Use the stability ball leg curl to work your hamstrings in the absence of a leg-curling machine. To make it more difficult, perform it with one leg.
The lying single straight-leg hip extension is not an effective exercise for overloading your hamstrings. Use it only when you do not have access to a gym.
The Smith machine bent-knee good morning, an isolation exercise, targets your gluteus maximus. Movement in the knees should be kept to a minimum.
Targeting your erector spinae, use the flat bench hyperextension only if you do not have access to a hyperextension bench. The range of motion is limited.
Easier to set up than the barbell one-leg hip thrust, the weighted one-leg hip thrust is a unilateral isolation exercise that targets your gluteus maximus.
Work your hamstrings, glutes, adductor magnus, and erector spinae with the straight-leg cable pull-through, a compound pulling exercise.
Target your hamstrings and obliques using the twisting hip extension, an isolation exercise. Your gluteus maximus and adductor magnus act as synergists.
Isolate your gluteus maximus and hamstrings with the standing cable hip extension, a unilateral isolation pull exercise. You will need ankle straps.
The twisting hyperextension is a compound bodyweight exercise that targets your erector spinae, hamstrings, and obliques. Your glutes act as synergists.