I'm not sure if it will help you, or if you even want help in any way... I don't have agoraphobia, but as I have times I don't leave the house for some periods of time, maybe it's okay to say it. For me, getting used to the outside world one step after another helps me coping with this mostly loud and hectic world. At first, I'll just go the way to the bakery, some time (sometimes days later) then the supermarket, maybe a bookstore next. I'll take walks at night, when no one is outside, then in the early morning, the evening, slowly getting used to daylight and weather again. And slowly but steady I'm ok again to go outside any time I want. As I don't like too many people in one place I i.e. asked the cashier at the supermarket which time there are the least customers and I do my shopping around that time.
The world has some nice spots out there and it's worth to explore it. Don't overexert yourself, take your time. The world will wait for you.
As a person with agoraphobia if someone comes and say they will give me anything I like and need just if I stay hone I will be super happy, I havent leave my house for 3 years now, and is hard specially when the world outside dont accept you and is just hard to find jobs at home, jobs that pay well, ┑(￣Д ￣)┍, but still the story was so beautiful and it help me to reconsider my life I may try to give it a chance to go out once again maybe this time will be better.