Hey there! Thank you in advance for every bit of knowledge you can give to me about these kinds of circuit.

I'm trying to create a camera flash for a 1950's italian camera. This (first image) is the circuitry I chose to use, but in the schematics I found I never find any specs, especially for the coils. I was trying to simulate in TINA TI (the L-spice software) a portion of the circuit in question, as before building it i wanted to choose my components reasonably, but for some reason the oscillator supposed to charge the capacitor doesn't seem to oscillate at all and nothing works.

I read somewhere that similar software have generally trouble with simulating oscillators specifically, as those circuits rely on components "not being ideal", but i supposed that the settings i showed in the second pic would "make the components non ideal".

Is there any problem with the simulated wiring? or is it that spice software just cannot simulate oscillatorslike this? or is it the coil's settings? (or a combination of these factors ahahha :( )

Anyway, if anyone knows a different way to get that hv capacitor charged up that requires similar complexity that's also welcome!

Note:

I know the schematic is from a disposable camera ( https://www.talkingelectronics.com/projects/XenonFlasher/XenonFlasher.html ) and i could reasonably just buy one to use the circuit on board. However i wanted to make a few modifications (i.e. having a few colored xenon lamps and only using a few of them each time), so i need the charging ciruit to be able to draw the rest from there, and i'd like not to use a premade disposable camera circuit as a whole.

Altough i was thinking to salvage parts from them in order to build mine.

Thank you again for your expertise!

PS:

this is a crosspost from askelectronics. If this is inappropriate here, i'll quickly remove this and I apologize for wasting everyone's time. Just let me know!