You cannot guarantee a thigh gap; it depends largely on bone structure, pelvis width, and fat distribution
Maintain a healthy, balanced diet
Create a moderate calorie deficit only if weight loss is appropriate for you
Do regular full-body exercise, including walking, cycling, or other cardio
Strength train your lower body and core for overall fitness
Avoid extreme dieting, dehydration, or overexercise
Get enough sleep and manage stress
Focus on health, strength, and body composition rather than a specific gap
If you want personalized guidance, talk to a doctor or registered dietitian