LineageOS 18.1 has been made available for owners of Samsung Galaxy Note 10 and Galaxy S10 family of devices. The stock Android-like custom ROM will, however, only work with the Exynos variants of these devices at this stage, however.
https://www.notebookcheck.net/LineageOS-18-1-adds-support-for-the-Samsung-Galaxy-Note-10-Galaxy-S10-series-Xiaomi-Mi-10T-and-the-Poco-F2-Pro.552758.0.html
As an S8+ owner I think that it's a bit of shame that the S10 is getting Lineage OS while the S8 still doesn't (and the derived Project Sakura has enough known issue to make it not usable for me).
qoute/You will also need to install Google apps and Services separately as these aren't included in the LineageOS 18.1 build. /qoute
No u dont need to install gapps u can just install microg and aurora store wich will save you space,privacy and battery life...