Ngl it’s all their fault getting in that situation in the first place, but like, there’s a possibility that they are still alive down there, slowly running out of air. Like maybe the tube fucking imploded and they all became a red mist, but they could also just be at the bottom of the ocean floor with no power.
Also, it’s very hard to think of a time when someone dying in a submarine was not funny. The confederates were the first ones to do it, their k:d with submarines is trash. Ze Germans had more success, but leave it to Ze Germans to hit a landmine in the ocean. After WW2 only the USA and USSR had submarines really, and by then they never really had to surface and were practically invincible and invisible. Of course there was a couple L’s for Amerikkka which I celebrate. And the poor the Soviet Union whose submarine deaths are not a laughing matter and I will literally block you if you make any jokes. Of course everything after 1991 until 2022 is cool to make fun of, they could put a swimming pool in a nuclear sub marine but not escape hatches. And the Americans fucking stole it, that’s an L.
Anyways you’re probably a chud if you’re in a submarine so I don’t feel bad for you.
The problem with controllers is that they have a small range of physical input, and don't allow for fine enough control in situations where you need to be able to make both very sharp turns and tiny, several-degree adjustments. You also also don't get the same feedback you'd get with traditional controls. I guess, if none of those things are critical, and you'd be using it in a safe environment, then a controller could still be an option.
You can use modifiers though to reduce movement in per movement out, like devices for microscopic surgery. Basically hold the left trigger on the controller for finer controls, software making up for hardware limitations.