Tā yǐqián shì diànshìtái nǚ zhǔbō, hòulái zhuǎnháng zuò zhíbō le.
She used to be a female anchor at the TV station; later she switched to livestreaming.
Tips
usage
主播 covers two distinct jobs: a TV/radio anchor (formal news role) AND a livestreamer (online performer). Context disambiguates — 电视台主播 is a TV anchor, 直播间主播 is a livestreamer. Without context, since ~2018 the livestreamer reading dominates.
culture
Female streamers dominate the entertainment-livestream economy on 抖音 (Douyin), 快手 (Kuaishou), and 虎牙 (Huya). Income is from 礼物 (lǐwù, virtual gifts) viewers buy and 'send' on screen — see 刷礼物.