Well your market is men who want to pay for sex, so not that different
If you do a search here there are other threads, but if you only have one ad then you need more - do you have decent photos that show what you look like, reasonable prices, plenty of availability including offering incalls?
Like the rest of us, everything that makes it more difficult for punters to book you means fewer bookings, whether it's something you can control or not. Some of these things are worth doing depending on how you want to work (so if you only have time to do one or two bookings a week it makes sense to charge more, say) but if you want to be busy you need to keep it accessible - amongst other things this means you shiuld have enough enquiries that you can afford to turn people away.
As with the OP though, I suspect it's crap timing as much as anything else. If you're not reliant on sex work for money then it's probably as well to just sit tight for now and it'll pick up as things improve
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