No quiero traicionar a mi amiga.

In Spanish, the usual way to make a sentence negative is to put no directly before the conjugated verb.

• Quiero traicionar a mi amiga. = I want to betray my friend.
• No quiero traicionar a mi amiga. = I do not want to betray my friend.

So no negates quiero.

After querer when you mean to want to do something, Spanish normally uses:

querer + infinitive

So:

• quiero traicionar = I want to betray

The second verb stays in the infinitive form, which here is traicionar.

Quiero is the first person singular present tense of querer.

• yo quiero = I want

So the sentence starts with No quiero... = I do not want...

This is the personal a.

In Spanish, when the direct object is a specific person (or sometimes a pet or personified being), you usually put a before it.

So:

• traicionar a mi amiga = to betray my friend

You are talking about a specific person, my friend, so the a is required.

Mi without an accent is the possessive adjective meaning my.

• mi amiga = my friend

Mí with an accent is a pronoun meaning me after a preposition, for example:

• para mí = for me

So here it must be mi amiga, not mí amiga.

Amiga is the feminine form, used for a female friend.

• amigo = male friend
• amiga = female friend

Since the sentence says mi amiga, the speaker is referring to a female friend.

Usually yes, traicionar is the normal translation of to betray in many contexts.

It can be used for:

• betraying a person
• betraying trust
• betraying a cause or principle

So in this sentence, traicionar a mi amiga naturally means to betray my friend.

Yes. In fact, leaving it out is the most normal option here.

Spanish often drops subject pronouns because the verb ending already shows who the subject is:

• (Yo) no quiero traicionar a mi amiga.

Both are correct, but No quiero traicionar a mi amiga sounds more natural unless you want emphasis or contrast.

For example:

• Yo no quiero traicionar a mi amiga, pero él sí.
  = I do not want to betray my friend, but he does.

Yes, but the given order is the most neutral and natural.

Standard order here is:

No + conjugated verb + infinitive + object

• No quiero traicionar a mi amiga.

You might change the order for emphasis in some contexts, but for a learner, this sentence is the safest and most natural way to say it.

Yes. Quiero is present tense, so literally it is I do not want to betray my friend.

Depending on context, present tense in Spanish can sometimes also sound natural in broader meanings like:

• I do not want to betray my friend
• I am not willing to betray my friend

But grammatically, the tense is present.

In writing, you add question marks:

• ¿No quiero traicionar a mi amiga?

But that exact version would sound unusual unless you are questioning yourself or repeating something with surprise.

A more natural question would usually be something like:

• ¿Quieres traicionar a tu amiga? = Do you want to betray your friend?
• ¿No quieres traicionar a tu amiga? = Don’t you want to betray your friend?

Spanish does not usually change word order as much as English does to form questions; intonation and question marks do a lot of the work.

In standard Spain Spanish, it is approximately:

trai-cio-NAR

The stress falls on the last syllable: -nar.

A rough guide:

• trai sounds like try
• cio in Spain sounds roughly like thyo or syo depending on accent and region
• nar sounds like nahr

So the whole sentence is roughly:

No KYE-ro trai-thyo-NAR a mi a-MEE-ga
in much of Spain.

In English you say my friend, not the my friend, and Spanish works similarly here.

Possessives like mi, tu, su, nuestro normally come directly before the noun without an article:

• mi amiga = my friend
• tu amigo = your friend

So a mi amiga is the correct structure.