Aurora Store and NewPipe use Google websites, so by using them you are still hooked-on-google. By using DuckDuckGo you are still hooked-on-microsoft.
Installing apps with Aurora is installing apps from Play store, with all the trackers they include…
You may have reduced the amount or type of personal information you feed them, some, but the amount of reduction or benefit is an open question.
Then there’s the tracking done by LineageOS itself.
Welcome to the nightmare. 