Welcome to Healthcare Magic Forum
You have many post inflammatory and post trauma scars
over your groin .
Topical medications can definitely be of help to you in reducing the pigmentation to some extent, although only after proper treatment, we can know the results
Since these are dark scars, i would advice that you should use a lightening agent like kojic acid and vitamin c combination over the scars,,this is a simple, harmless lightening agent which can be used for as long the blackish pigmentation is there.
Also ,try not to touch the area too much .
Take a diet rich in vitamin C and antioxidants like Citrus fruits and lots of salads.
Hope it helps
Wishing you speedy recovery
Dr Geetika Paul