If you are minded to “have a go” … I think it is worth linking two threads
- Problem installing /e/ on Galaxy S10 (SM-G973F dual-sim)
- Samsung - Galaxy S10 - beyond1lte - Documentation Suggestions
It is something of an unknown, did the early adopters of SM-G973F/DS in the first link suffer from a “dual SIM issue” or simply from the more general difficulties of this “newer generation” of Samsung ? The second link is worth careful study.
This generation of Samsungs is beyond my hands on experience; I have a feeling users following https://doc.e.foundation/devices/beyond1lte/install might have underestimated the great importance of the Pre-Install Instructions.
Please be aware of the advice at the start of the page …
Please read through the instructions at least once before actually following them.
I prefer … Please read through the instructions at least three times … 
Good luck.