Depends on what problem you are facing in anal area. If it’s an external mass or fistula then Kshara sutra can be opted however it’s not clear from your explanation also it’s less likely that a complete lateral sphincterotomy has failed. You need a thorough examination.
Next Steps
Get your problem examined by a proctologist. If you tell where are you from I can give guidance on whom to meet
Health Tips
Follow diet, sitz bath and external application. Drink hot water mixed with a tea spoon of ghee at be time and early morning on empty stomach