Changing the operating system is always associated with risks, whether with CustomROM or Generic System Image (GSI). If you are not sure what you are doing - please get help from someone who knows how it works.
As there currently seems to be no CustomROM for the SX200, the only option for degogling is a GSI. By the way: The Samsung Galaxy Tab A8 10.5 (2021) SM-X200 + SM-X205 not only runs LineageOS 19 GSI but also LOS 20 + 21 as well as AOSP 13 + 14 GSI.