ни о ком, кроме себя

about no one but oneself

→ ни
phrase Rare #36,829
about no one but oneself Used with a negative verb; себя refers back to the subject, so the English wording changes with the subject (for example, “himself” or “herself”).
RU: Он заботится ни о ком, кроме себя.
EN: He cares about no one but himself.

Она ни о ком, кроме себя, не думает.

She doesn't think about anyone but herself.

Он не думает ни о ком, кроме себя.

He doesn't think about anyone but himself.

Мэри не думает ни о ком, кроме себя.

Mary doesn't think about anyone but herself.

Он ни о ком, кроме себя, не думает.

He doesn't think about anyone but himself.

Мэри ни о ком, кроме себя, не думает.

Mary doesn't think about anyone but herself.

Они ни о ком, кроме себя, не думают.

They don't think about anyone but themselves.