Depends which "individual piece", especially whether it was on the side that "spent money" or correspondingly "raised taxes". The individual mandate polled as 43% "very unfavorable" and 20% "somewhat unfavorable". Perhaps that's why it was, in fact, repealed.
Parts of it have been repealed, sure, but what Republicans were calling for were a full scrapping of Obamacare (and replacement) including the parts that people liked, like the ban on denying coverage pre-existing conditions or charging those people more.
They backtracked on this after Democrats wielded this as a cudgel in the 2018 blue wave.
https://www.kff.org/health-costs/poll-finding/kaiser-health-...
See also the discussion in this thread, which mentions other unpopular provisions like the Cadillac tax (also repealed!): https://news.ycombinator.com/item?id=24410307