Please use your head. When searching for any kind of porn be careful. Porn sites are notorious for phishing, scams. malware, viruses and ransomware. The more extreme your category of porn the more likely this is. Since Twink Porn involves young teenage boys, it would be very dangerous to just log onto such a site without checking its veracity beforehand.
I wish you luck in finding Twink Porn that satisfies you. Please keep it legal!