Samsung new user interface is pretty slick but it still comes with features that you may not need. You can install a custom vanilla Galaxy Tab S5e ROM and enjoy plain google android experience.
Or you can debloat your Tab S5e and remove stuff manually. However, we will be going the easier and safer way by installing Resurrection Remix for Samsung Tab S5e that not only debloats the tablet but also gives you pure android experience.
Installation instructions.
Download the ROM. Unlock the bootloader, 1. Connect to WiFi network, 2. Enable OEM Unlock in developer options, 3. Turn off the tablet, Boot to download mode manually by plugging in USB and holding all the buttons for few seconds, 4. Follow instructions on the screen
Connect to WiFi network and make sure OEM Unlock in developer options is still checked
Flash custom VBMeta image in Odin ( use AP slot )
After flashing VBMeta, boot to stock. It’ll likely ask you to wipe data, if so do that
Connect to WiFi network and make sure OEM Unlock in developer options is still checked
Now you can flash TWRP in Odin ( use AP slot once again ), for convenience you can hold volume up while flashing it so that you boot to recovery right after it’s flashed
Install RR LuisROM and whatever else you need ( gapps, magisk, … )
Format data
Reboot
Vanilla Galaxy Tab S5e ROM features:
Based off latest Resurrection Remix V7.x (pie), lineageos and aosp sources
Latest security patches and sources
OTA Updater (LineageOS Updater)
Compatible with EX Kernel Manager
Many other misc. performance and stability improvements under the hood
This vanilla Galaxy Tab S5e ROM also comes with custom kernel.
Kernel: Linux 4.9.x Kernel with many mods
Removed lots of excessive bloat (improves security and performance)
Improved stability (several bugs not listed here have been fixed)
Boeffla Wakelock blocker driver V1.1.0
More I/O-Schedulers (fiops, sio, zen, maple)
Optimized for performance and battery life
Fast charging
Compatible with systemless root (recommend Magisk 19.X)
Many other misc. improvements not listed here