disinterested / natural / cool

making sport of *someone / making a fool of *someone / deride *someone / mock *someone / make sport of *someone / mocking *someone / ridicule *someone / making fun of *someone / ridiculing / make a fool of *someone / deriding *someone / make fun of *someone

make fun of / mock / deride / ridicule / jeer at / laugh at / scoff at

lose heart / be discouraged / give up / be disheartened

throw up / chuck / abandon / lay aside / quit / give up / give / deliver up

give up

abandon / give up

give up / resign / abandon

abandon / abandon [a ship] to her fate <ship> / leave

abandon *something (to *one's fate) / leave (to destiny)