I am a happy /e/ user for quite some time and finally found the time to look into the upgrade process to upgrade from Android 8 to 10.
As far as I understood there should be the possibility to upgrade via OTA. But that option cannot be found in the “Settings-Software Update” menu.
So far I checked the existing How-Tos and digged in the forum but without success.
Could someone please give me a hint on how the upgrade needs to be done?
Is there an Android 10 / Q build for you device? If there is, then you should be able to install it manually using adb and TWRP, without going back to the stock firmware in between. Though you will probably need to wipe your data partition, and lose all your installed apps and user data
But check /e/'s install instructions for your device: Samsung phones can be “special”