Eu não tenho coragem de falar na frente de todos.

Yes. In Brazilian Portuguese, you can often omit subject pronouns when the verb already makes the subject clear.

So both are natural:

• Eu não tenho coragem de falar na frente de todos.
• Não tenho coragem de falar na frente de todos.

Including eu can add a little emphasis or clarity, especially if you are contrasting yourself with someone else.

Example:

• Ela consegue, mas eu não tenho coragem.
  She can do it, but I don’t have the courage.

In Portuguese, the normal position of não is before the verb it negates.

So:

• não tenho = I do not have

This is the standard pattern:

• não sei = I don’t know
• não quero = I don’t want
• não posso = I can’t

English uses do not for many verbs, but Portuguese usually just puts não before the main verb.

Ter coragem is a very common expression that means to have the courage, to dare, or to feel brave enough to do something.

In this sentence, não tenho coragem means:

• I don’t have the courage
• I’m not brave enough
• I can’t bring myself to

It is often used for situations where a person feels nervous, shy, afraid, or emotionally unable to do something.

Examples:

• Não tenho coragem de pular. = I’m not brave enough to jump.
• Você tem coragem de perguntar isso? = Do you dare ask that?

Because coragem normally takes the preposition de before an infinitive verb.

So the pattern is:

• ter coragem de + infinitive

Examples:

• Tenho coragem de tentar.
• Ela não teve coragem de contar a verdade.
• Você teria coragem de fazer isso?

This is just the structure the expression requires in Portuguese. English learners often want to skip the preposition, but in Portuguese de is needed here.

It is in the infinitive because it follows the structure ter coragem de + verb.

So:

• tenho coragem de falar
• tenho coragem de perguntar
• tenho coragem de entrar

This is similar to English to speak, to ask, to enter, although Portuguese does not always use a separate word exactly like English to. Here the preposition de is part of the expression, and the next verb stays in the infinitive.

Na frente de todos means in front of everyone or before everyone.

Breakdown:

• na = contraction of em + a
• frente = front
• de todos = of everyone / of all

So literally it is something like:

• in the presence of everyone
• in front of everyone

It refers to speaking where all people are watching or listening.

Na frente de is the normal expression for in front of in the sense of position or being before a group.

Examples:

• Ela sentou na frente de mim. = She sat in front of me.
• Falar na frente de todos = to speak in front of everyone

Em frente a usually means facing, opposite, or across from.

Example:

• O banco fica em frente à escola. = The bank is across from the school.

So in your sentence, na frente de todos is the natural choice.

Todos means everyone or all people here.

• todos = all / everyone, masculine plural, also used for mixed groups
• todas = all, feminine plural only
• tudo = everything

So:

• na frente de todos = in front of everyone
• na frente de todas = in front of all of them, if the group is entirely female
• na frente de tudo would not make sense here

Because Portuguese uses masculine plural for mixed or unspecified groups, todos is the usual form.

Because ter coragem is a fixed, idiomatic expression.

Portuguese often uses ter + noun without an article in common expressions:

• ter coragem
• ter medo
• ter paciência
• ter razão

So:

• não tenho coragem = I don’t have the courage / I’m not brave enough

You may sometimes hear a coragem in other contexts, but not usually in this expression.

Example:

• A coragem dela impressiona todo mundo. = Her courage impresses everyone.

But in your sentence, tenho coragem is the natural form.

Mostly fear, shyness, or emotional hesitation — not lack of skill.

Não tenho coragem de falar na frente de todos suggests:

• I feel too nervous
• I’m too shy
• I can’t bring myself to do it
• I don’t dare

It does not mainly mean:

• I don’t know how to speak
• I am physically unable to speak

So this is more about emotional courage than technical ability.

Yes, but the meaning changes a little.

• Não tenho coragem de falar na frente de todos.
  I’m not brave enough / I don’t have the courage.

• Não consigo falar na frente de todos.
  I can’t manage to speak in front of everyone.

The second one focuses more on the result or difficulty. The first one focuses more on inner courage.

Another similar sentence is:

• Tenho vergonha de falar na frente de todos.
  I’m embarrassed / shy about speaking in front of everyone.

Each one has a slightly different nuance.

No, not in this structure.

With ter coragem, the correct pattern is:

• ter coragem de fazer alguma coisa

So:

• tenho coragem de falar ✅
• tenho coragem pra falar ❌ in this meaning

Pra can be used in many Portuguese sentences, but after coragem the usual and correct preposition is de.

A natural Brazilian pronunciation might sound roughly like:

Eu não tenho coragem de falar na frente de todos.
Approximate sound for an English speaker:
eh-oong nao TEN-yo ko-ra-ZHEM dji fa-LAR na FREN-tchi dji TO-dus

A few useful notes:

• não has a nasal sound, not a clear final o
• tenho sounds like TEN-yo
• coragem in Brazil usually ends with a sound like zhẽ
• de often sounds like dji before words like falar? Actually before falar, many speakers say more like dji only before i/e sounds, so here it is often closer to di or dê, depending on accent
• frente often sounds like FREN-tchi in many Brazilian accents
• todos often sounds like TO-dus

Pronunciation varies by region, but that gives you a helpful general idea.

Yes, very natural.

A Brazilian speaker could easily say:

• Não tenho coragem de falar na frente de todos.

It sounds normal in everyday conversation and clearly expresses discomfort about speaking publicly.

A few natural alternatives are:

• Não tenho coragem de falar em público. = I don’t have the courage to speak in public.
• Tenho vergonha de falar na frente de todo mundo. = I’m shy/embarrassed to speak in front of everyone.
• Não consigo falar na frente de todo mundo. = I can’t manage to speak in front of everyone.

Your original sentence is correct and idiomatic.