Vikki
This is probably no consolation to you but it took me 10 years to get my license. Partly lack of funds partly health.
At 18 I’d resign myself to flying occasionally and concentrate on getting qualified so you can get a job that will allow you to fly regularly later in life.
Join the PFA you won’t be able to learn to fly with them, but if you get involved with a local strut (god I hate that name) then you should be able to get plenty of flights to tide you over between lessons. Or hang out at your club most pilots are more than happy to take passengers with them. Again it won’t get you your license but it should help with the addiction.
Hang in ther you will get your license eventually and you'll probably apriciate it more for the effort it took.