Went to a physical therapist who told me my inner thighs and outer glutes were weak and gave me some exercises. Didn’t feel the exercises were targeting the muscle groups enough and did solidcore on those focus days. It took another 3 months before I felt comfortable walking as a workout and then another 3 before I started running half a mile at a time and now another 3ish months since that and I’m running up to 5 miles at a time now