Hi Jonas! If the Galaxy S10e is supported by LineageOS, you should be able to get Maru running on it without too much trouble. However, we have noticed some freezing issues with streaming Maru Desktop on the S9+ that we still haven't solved - it is possible that the S10e has the same issue. I suggested discussing with @GeorgianChituc, who worked on the S9+ build.
The best way to started is to get LineageOS built from source for your device and see how it works. If you can do that successfully, we can walk you through enabling Maru for it.