Very unfortunate timing on your part, should have researched a bit better before taking the plunge. Coupled with the comment of weeks, not months of funds, suggests you didn't prepare well for the plunge and it will only get harder from here.
Because of the IR35 and off payroll rules changes that are coming in 3 weeks, Private sector job ads are being flooded by the exodus of PS contractors, while PS are freezing new contracts until after the tulip hit the fan. I imagine the market will be extremely slow in the next month at least.
I would strongly suggest you expand your job search into high paid perm roles in addition to contracts and
lowerget rid of your expectations of rate and location for the first contract sooner, rather than later.