I always went to the facilities to ask to apply. I went dressed as if I might be interviewed on the spot. In a sense, the person who you speak to just may be the one who interviews...you never know! Either way, they get an impression of you right then. Some places handed me an application to fill out there, some said go online. At one home care agency, they did actually interview me right then and there.
You may have to go several times and apply several times. Where I currently work, the receptionist recognized me, saw me coming, said hello and handed me the application without my even asking!
....I was called the NEXT day for an interview and was hired...
Keep at it, you'll get there!!