Thanks for the clear pic young man.
This lesion appears "cystic" to the naked eye
It could well be an infected sebaceous cyst.
Need more clear pics and history and preferably an examination or an ONLINE INSTANT Consultation 🙏 to guide you further and rid you of this recurring issue
It can be done with use of oral meds or surgical excision as per your preference and situation.
Health Tips
Avoid OTC products, home remedies and self treatment or Dr Google suggestions.
Topical creams also may not be effective given its size.