Review Detail of Verstehen in Starship commander trapped in a fantasy world

I was pretty confused with the dialogues of some characters in this novel. This novel has full potential, if the author has someone to proofread his works and help him make the story easy to read. Also there are some aspects in the MC that is lacking, like he is a soldier but the aura he gives off in the first chapters is more like an Isekai MC which he is not. The story could have been perfect if the MC has atleast someone survived with the ship. But still it has a Unique concept 0_0