(Concern) Symptoms of stiff hip joint

After suffering from a herniated disc for about a year in 2020 and experiencing significant improvement in my back, I often feel stiffness in my hip joint.

When you visit the hospital, there are no special abnormalities, and only manual therapy is recommended.

They said it might be because of the waist that the hip joint has worsened.

The right side is stiffer than the left.

I used to be proud of my flexible body, but now I feel sad.

I do stretching and walk about ten thousand steps every day, and I also do strength training. What else should I do?ㅠㅠ

People around me say there is also a condition called frozen shoulder of the hip, but getting older makes me feel sad.

When I go to the hospital, I don't hear any particularly reassuring answers.