With no hope of conversion, you most use your own skill to get yourself lynched. Luckily for you, there are many options:
Claim hunter? Claim gallis? Gallis-hunt? Fake a report? Fake on yourself during lights out? Fake disguised? Claim silenced? Claim hit? Don't even try!? Meanwhile, the town must sort out the claims, while the disguiser tries to contact their partner.