I can give you a link to download my build if you want (which is a pristine unofficial build with Android security patches till February 5, 2019), but in the end, it depends on whether you'll trust a binary build from some random person: https://mukund.org/tmp/lineage-15.1-20190214-UNOFFICIAL-whyr...

It is neither difficult nor very slow to build it from source, but it can do with a fast internet link (~fiber speeds) as the build process initially clones from several git repositories (but later syncs just fetch the changes which is very fast). Unfortunately not everyone has access to fiber.

With fiber, the clone and build ought to complete in about a day depending on your machine's performance. I recommend that you build your own (let the initial build run in the background even if it takes more than a day to finish). If you do it once and use the built OS, you'll not search again.