No quiero morir.

In Spanish, basic negation usually goes directly before the conjugated verb.

• No quiero morir. = negative sentence
• Quiero morir. = affirmative sentence

So no comes before quiero, not before morir.

A useful pattern is:

• No + conjugated verb + ...

Examples:

• No puedo ir.
• No vamos a salir.
• No quiero comer.

Because quiero is the conjugated form of the verb querer for yo.

The infinitive is querer = to want.
But in a full sentence, Spanish usually needs a conjugated verb.

Present tense of querer:

• yo quiero
• tú quieres
• él/ella/usted quiere
• nosotros queremos
• vosotros queréis
• ellos/ellas/ustedes quieren

So quiero means I want.

Because after querer, Spanish normally uses an infinitive when you mean want to do something.

Pattern:

• querer + infinitive

So:

• quiero comer
• quiero dormir
• quiero salir
• quiero morir

This is very similar to English want + to + verb, except Spanish does not use a separate word for to here.

In Spanish, the infinitive already contains the idea of the basic verb form, so after verbs like querer, poder, necesitar, preferir, and many others, you just use the infinitive directly.

Compare:

• English: I want to die
• Spanish: Quiero morir

More examples:

• Necesito descansar = I need to rest
• Puedo entrar = I can come in
• Prefiero esperar = I prefer to wait

So Spanish does not need an extra word equivalent to English to in this structure.

Yes, Yo no quiero morir is correct.

Spanish often omits subject pronouns because the verb ending already tells you who the subject is.
Here, quiero clearly means I want, so yo is not necessary.

• No quiero morir. = natural and common
• Yo no quiero morir. = also correct, but more emphatic

You might include yo if you want contrast or emphasis:

• Yo no quiero morir, pero él sí.

A simple pronunciation guide:

• quiero ≈ KYEH-ro
• morir ≈ mo-REER

A bit more detail:

• qu before i/e sounds like k
• ie in quiero forms a diphthong, roughly like ye
• The r in quiero is a single tap
• In morir, the stress is on the last syllable: mo-RIR

In standard Spanish from Spain:

• No quiero morir ≈ noh KYEH-ro mo-REER

Yes. Morir is a stem-changing verb.

In many present tense forms, the o changes to ue:

• yo muero
• tú mueres
• él/ella muere
• nosotros morimos
• vosotros morís
• ellos mueren

But in your sentence, the form is morir, the infinitive, so you do not see the stem change there.

It also has some other irregular forms, for example:

• past participle: muerto

Both relate to dying, but morirse is the pronominal form and is often very common in everyday speech.

• morir = plain dictionary form
• morirse = to die, often sounding more personal, emotional, or natural in many contexts

So these are both possible:

• No quiero morir.
• No quiero morirme.

In many situations, morirme sounds a bit more idiomatic in conversation, but morir is absolutely correct and clear.

Yes, it is correct.

With morirse, the reflexive pronoun can go:

• before the conjugated verb: No me quiero morir
• or attached to the infinitive: No quiero morirme

Both are grammatical and mean the same thing.

This kind of placement is common with infinitive structures:

• Quiero levantarme
• Me quiero levantar

So:

• No quiero morir = non-pronominal
• No quiero morirme / No me quiero morir = pronominal version

It can mean both, depending on context.

• querer + infinitive usually means to want to do something
  • Quiero salir.
• querer + noun/person can mean to want or to love/be fond of
  • Quiero un café.
  • Quiero mucho a mi abuela.

In No quiero morir, the meaning is clearly I do not want to die, not I do not love dying.

Usually, No quiero morir is the normal order.

Spanish word order is somewhat flexible, but this sentence is most natural as:

• No quiero morir.

You might hear other orders only for special emphasis, poetry, drama, or very marked speech. For normal conversation, stick with the standard pattern:

• No + conjugated verb + infinitive

Yes. No quiero morir is perfectly natural and understandable in Spain.

That said, in spontaneous speech, many speakers might also say:

• No quiero morirme
• No me quiero morir

Those versions can sound a bit more conversational or emotionally immediate, but No quiero morir is still completely standard.