Hola young lady ...
Understand your issue is post acne pigmentation and scarring.
First, address the primary issue assuming acne is still occurring and this will require a more detailed history and blood tests to rule out a hormonal factor aggravating it.
Peels can be tricky and home peels more so .. it may end up causing more pigmentation. BEST to consult a Dermatologist 📥 in person or Online and take a personalised opinion as per your particular situation.
Next Steps
Online Consultation or if in Bangalore, an in-person consultation possible.
Health Tips
Avoid OTC (over the counter) preparations and home remedies
Face cleanser (eg Mandisa foam) usage may help...this will also give you a clue 🧩 if Mandelic acid peels will help your case going forward ⏩ but as i suggested and I repeat : best to get this done under Dermatologist supervison.