I can't stop myself from masturbation

I started masturbation its been a Quite long time. Once my mom saw 18+ videos on my phone I was really ashamed and shamed she told me to never watch it Again I Didn't for a long time. But in this world where social media shows Everything and in movies there is scenes that makes me really active and i can't control. I'm 23 years old I have sexual needs I'm a student I can't marry now and I need to somehow full fill my needs. So how can i stop? I can't leave social media, I love watching movies and series also i can't stop my eyes looking at women who wears short and tight cloths how can i stop myself I Don't understand. Why i was born in this generation why? I'm Ashamed also I can't stop myself what to do I feel guilty