Please let me not be the only one!!!

So I just started using this app and can I say I love it how we are so open and not to judge so I have a confession

I'm 19 years old and single and a virgin when I was 12/13 years old I watched my first porno and from then on I started to watch it regularly then I started to explore my body (if you know what I mean) and I feel so ashamed of myself because I'm a Christian.

How do I stop exploring and touching myself I need help.