but when in a skirmish you will be fucked by her so
wat do?
What do you do when a Ryze lands his root on you in a skirmish?
Nothing, you get blown up.
What do you do when a Darius grabs you in a skirmish?
Nothing, you get dunked.
What do you do when a poppy stuns you into a wall?
Nothing, you get hammered down.
What do you do when an Irelia jumps on you in a skirmish?
Nothing, you get shredded.
You are not supposed to be able to deal with these situations 1v1 as a Jhin.
You are an immobile midrage caster-adc, with a high-range ult.
If things get spicey up close, you either have your team protecting you, or you are fk*ed.
That's how that champion works, period. Has nothing to do with camille, the only thing she adds to the game, is that you cannot use flash...which, btw. you also can't use during a lot of CCs other melee champions use (Poppy stun, Irelia Stun, Ryze Root).
If you want to be able to protect yourself in such situations, play an ADC with defensive/mobility skills.