For Regular dead lifts or "stiff leg deadlifts" you can use a dumbbell or separate hand weights. When women are doing high reps with weights, they're limited with how much they can increase the weight but deadlifts are definitely an exercise where you can challenge yourself and really increase the weight. In these pictures I only used 20 lb weights for higher reps but when I use a dumbbell I lift a lot more.
Staring in a standing position hold the weights, lean forward and have the weights follow your legs down to your shins while keeping your legs as straight as possible. Then lift back up, squeezing your glutes and repeat for the appropriate amount of reps to the weight you are lifting
Looking at this picture, my knees should honestly be less bent but my legs were so tight when I did this and I should have stretched out more before working out
For Romanian Deadlifts, start in the same starting position but as you start to bring the weight down to your shins, bend your knees. For this type of deadlift, you should be going closer to the floor and stick your butt out more. Once again continue this for as many reps relative to the weight you are lifting
Both exercises are really simple but the results are unreal. For me, having bad knees - deadlifts are less painful than squats but like I said before you should really be doing both instead of one over the other