Pick a flying school that does a reasonable amount of hours, see what the situation is with their present instructors, ie: do any of them have enough time that they are looking at moving on, and then hang around. Clean planes, sweep the hangar, make the CFI a cup of tea....whatever it takes to get a reputation as a hard worker. Eventually you will find the odd flights coming your way, until you are getting regular flying hours. Sounds like quite an old-fashioned way to get a job I suppose but it still works.
The thing I've learned is that you need brownie points and you can never get enough of these. I have a regular job now and I still clean a lot of planes.....subsequently the flying keeps on coming.
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"if there is no peril in the fight, there is no glory in the triumph"