What Adc is good on silver division?

Yep, defo Sivir.
Even if you feed all game long, just play as a splitpusher. Your waveclear is insane, if they're not paying attention you'll get their inhib faster than they can do baron.
And if they try to catch you, just press R and time your spellshield, lmao
Besides that, the W is op in teamfights