I saw a ballast circuit for fluoresent like the one in the attchment
What did you saw? An operating circuit? Or a schematics, that was said to work? It doesn't work as shown, for several reasons.
1. The feedback polarity is wrong.
2. It misses a startup circuit
3. A base current can only flow by breakdown of the opposite base-emitter junction.
4. There's no explicite current limit for the base current, so it depends on the transformer dimensioning (e.g. winding resistance and leakage induction), if the circuit will survive the first seconds of operation.
P.S.: If the said faults would be corrected, the circuit still needs meaningful winding ratios. How do you intend to find them?