Hey,
In the first place welcome here, happy that you've found your way here. In the second place, I suppose that you're here to overcome problems with porn or other unwanted sexual behaviour? Anyways, I suppose it's about porn. An important thing to understand about people dealing with porn and addiction is that it messes up your sex drive. If you haven't yet, read YourBrainOnPorn. It's the go-to website / book for most people here to understand their addiction and behaviour.
Porn offers an infinite amount of women that are ready to have 'sex' with you, since that availability is pretty much wired into your brain it most likely affected your sex drive and expectations. You were able to have an orgasm with pretty much any person on porn sites so it has likely affected your brains and decision making. The further you move away from porn, the more your natural sex drive will come back. Just take it easy, avoid porn, fantasies and whatever else made you come here. Additionally many people here face a so-called 'flatline' period when quiting PMO. Might be good to read up on that as well.
Anyways, good luck in your own journey. Hope you'll find what you need here!