Check the few below points:
✔️ Your posture, whether you are more weight bearing on one leg compared to other?
✔️ The exercise technique is right?
✔️ Tightness or Weakness in your muscles?
✔️ The surface on which you are doing the exercises?
Next Steps
1) Increase your knee muscles strength
2) Balance your weight equally on both legs
3) Stretching your calf, knee and thigh muscles
4) Prefer wearing shoes or use non slippery mat that won't load your knees
Health Tips
Do your exercises in front of the mirror so that you will get an idea about your posture, do icing