sino porque

not because ... but because ...

→ sino
phrase Rare #30,535
not because ... but because ... Used to contrast the real reason for something with a different, usually rejected, reason.
SP: No fui por aburrimiento, sino porque estaba cansado.
EN: I didn’t go because I was bored, but because I was tired.

Hice eso, no porque quisiera, sino porque tenía que hacerlo.

I did that, not because I wanted to, but because I had to.

No porque fuera incapaz, sino porque tomaba la droga opuesta al personaje.

Not because he was incapable, but because he was taking the opposite drug to the character.

— Dolor y gloria (2019)

No lo hice porque lo necesitase, sino porque me apetecía.

I didn’t do it because I needed to, but because I felt like it.

No es porque le odie, sino porque le amo.

It's not because I hate him, but because I love him.

No lo he hecho porque quisiera, sino porque tenía que hacerlo.

I didn’t do it because I wanted to, but because I had to.

Quiero comprar este libro no porque sea barato sino porque es útil.

I want to buy this book not because it's cheap, but because it's useful.

No quiero comprar este libro porque sea barato sino porque es útil.

I don't want to buy this book because it's cheap, but because it's useful.

Soy un vegetariano, no por amar a los animales, sino porque odio a las plantas.

I am a vegetarian, not because I love animals, but because I hate plants.

Él me gusta no porque sea amable, sino porque es honesto.

I like him not because he's kind, but because he's honest.