need a tune for scuderia help me!!!

Regardless of what else you do, try the camber at:

-3.5 front
-1.8 rear

Use that as a baseline. You will likely eliminate most understeer with that. There is no tire pressure adjustment for fine tuning so the camber is the first approach, followed by a combination of spring rate and anti-roll bar. Having a stiff anti-roll bar will increase initial turn-in response to a point, but then will understeer at the limit of a corner if you go too far. Higher spring rates with less anti-roll bar stiffness is my personal choice. I also run my camber for tight tracks upwards of -5 to -6 in front.

Just one more opinion in a sea of too many.
 
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