A company needs to invest even in a freelancer (line check, uniform etc) so freelancers are of little interest if they might only be around for one or two flights. Our company, as an example, therefore only ever employ freelancers who live permanently within an hour of the home airport, and who can be relied upon if they are needed at short notice. Having outside business interests that keep you afloat when not flying is useful, as it means you are possibly not going to be freelancing elsewhere, possibly making your short-notice availability higher.
You will obviously have to pay for your type-rating yourself, but assuming you are prepared to do so, I suggest going to all the airports within an hour of your home, and see what aircraft need pilots.