Which, in turn, was inspired by TopJohnWu's 'Samsung (System-as-root)' Magisk Installation Guide
It is an extended walk through aimed at ALL users, meant specifically for the SM-T720 (Tab S5e) BUT specifically meant to:
UNLOCK THE BOOTLOADER
RESTORE STOCK/RELOCK THE BOOTLOADER
Because of the community support, the options available to you have become numerous!
So if you're looking to squeeze EVERY inch out of your tablet, search the thread for suggestions or see the links below:
Go HERE if you are interested in custom recovery (e.g., TWRP).
Go HERE if you are interested in custom ROMs or kernels.
Introducing root and further tampering may lead to unfavorable performance and/or shortened device lifespan.
In extreme circumstances, it may render your device OR specific hardware components unstable or non-functioning.
By following this guide, you ACKNOWLEDGE these risks and release AHE_XDA, XDA and its CONTRIBUTORS of ANY and ALL responsibility.
In many states, countries, provinces and territories, introducing root voids device warranty (manufacturer's and/or third-party). Please consult your regional Samsung office, place of purchase or third-party warranty company to determine if these terms are applicable to you.
ALTERNATIVES TO ROOT
If you are looking to maintain warranty and continue access to Samsung-specific features, consider disabling or uninstalling unwanted applications via the Android Debugging Bridge (ADB).
TiTiB, a genius in his own right, has a thread dedicated to the Tab S5e and bloat removal without the cost of warranty.
Visit it HERE and click 'Thanks!' if it helped.