Here is a short video of the 7-Way Hip series that is great for strengthening and building up the endurance of the gluteus medius. The gluteus medius is in charge of leg abduction, internal rotation of the thigh, and stabilization of the pelvis. This stabilization can be observed when walking, running, and especially when performing single-legged activities. In all of these movements, the gluteus medius works to prevent the hip opposite to it from dropping. When one of the hips drops, it shifts tension into the opposite knee, causing overcompensation and potential injury. A strong gluteus medius prevents the shift of the hips and keeps the pelvis in line while in use.
I suggest doing this with great intention once daily if you really struggle with hip strength and endurance. Over time its good to use an ankle weight and start to challenge the tissue/muscles through a little more load. Maybe 2-4 days play with a load and the other days keep it unloaded and use it more as movement hydration - aka work with the body in a gentle way.