Games where taking a life feels weighty?

Edit: Here are the most recommended games

-Last of us (Part 2 specifically):

-Death Stranding

-Undertale

-Ready or Not

-Arma

-Dayz

-Metal Gear games

-Vampyr

-This War of Mine

-Kingdom Come Deliverance 1 and 2

-Hell Let Loose

Thanks guys, I'll be checking some of these out.

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Specifically I'm looking for shooters, but any game that fits the criteria is good.

I'm talking about weight gameplay-wise, so killing another person actually feels like a challenge. Too many games, even those that pride themselves on their realism and grittiness, have you slaying hordes and hordes of enemies, so by the end your character racks up a triple digit kill-count. Even games universally loved, like Red Dead Redemption 2, have an unrealistic amount of enemies and superhuman main characters. Every shootout ends up with thirty bodies.

I want a game where the shootouts feel just as challenging, but the amount of bodies laying on the ground at the end of a gunfight is like, 3 or 4, not 40. Smart, accurate AI, and players have just as little health as the enemies, so running and gunning is a total no-go, you have to actually plan out your engagements.

I know there are games with elements like this, or where these are true to certain extents, but there are always just so many enemies to kill anyway.

I want to have the crater scene from All Quiet in the Western Front play out every time I kill someone goddamnit. I want my character screaming and crying and pissing their pants in sadness.