No me gustan los zapatos de tacón porque me canso enseguida.

Because the thing being liked is los zapatos de tacón, which is plural.

With gustar, the subject of the verb is the thing that is pleasing, not the person who likes it.

• Me gusta el zapato. = I like the shoe.
• Me gustan los zapatos. = I like the shoes.

So here:

• los zapatos de tacón = plural
• therefore gustan = plural

Because gustar does not work like English to like.

In English:

• I like shoes.

In Spanish, the structure is closer to:

• Shoes are pleasing to me.

So:

• me = to me
• gustan = are pleasing

That is why No me gustan los zapatos de tacón literally means something like High-heeled shoes are not pleasing to me.

Yo no gusto... would mean something different, more like I am not pleasing / people don’t like me, depending on context.

Here me means to me.

It is an indirect object pronoun:

• me = to me
• te = to you
• le = to him/her/you formal
• nos = to us
• os = to you all
• les = to them/you all formal

So:

• Me gustan los zapatos = I like the shoes
• literally: The shoes are pleasing to me

This second me belongs to a different verb: cansarse.

• cansar = to tire someone / to make someone tired
• cansarse = to get tired / to become tired

So:

• me canso = I get tired

The first me goes with gustan. The second me goes with canso.

They are both correct, but they do different jobs in the sentence.

Because the meaning is slightly different.

• me canso enseguida = I get tired very quickly / I tire easily
• estoy cansado/a = I am tired

In this sentence, the speaker is giving a general reason for not liking high heels:

• wearing them causes the speaker to become tired quickly

So me canso enseguida fits better than estoy cansado/a, which describes a state rather than a tendency or result.

Yes, cansarse is a reflexive verb.

• cansar = to tire someone
  • Los zapatos me cansan. = The shoes tire me.
• cansarse = to get tired
  • Me canso. = I get tired.

In me canso, the reflexive pronoun matches the subject:

• me canso = I get tired
• te cansas = you get tired
• se cansa = he/she gets tired

This is a very common pattern in Spanish.

De tacón means with a heel or heeled.

So:

• zapatos de tacón = high-heeled shoes / shoes with heels

In everyday English, this is usually translated as high heels or high-heeled shoes.

The structure noun + de + noun is very common in Spanish:

• zapatos de cuero = leather shoes
• mesa de madera = wooden table
• gafas de sol = sunglasses

So de tacón describes the type of shoes.

Yes, very often.

• No me gustan los tacones... is very natural and common.
• No me gustan los zapatos de tacón... is a bit more explicit.

Both are correct.
In many contexts, tacones is the more natural everyday choice because everyone understands it means high heels.

Enseguida usually means right away, immediately, or in this kind of sentence, very quickly.

Here:

• me canso enseguida = I get tired very quickly / I tire very easily

Yes, enseguida is very common in Spain.

Depending on context, it can mean:

• I’ll do it right away = Lo hago enseguida
• I get tired quickly = Me canso enseguida

So the exact English translation depends on the sentence.

Both are possible.

• No me gustan los zapatos de tacón = neutral, very common
• Los zapatos de tacón no me gustan = also correct, but puts more emphasis on los zapatos de tacón

Spanish word order is more flexible than English.
Moving los zapatos de tacón to the front can add contrast or emphasis, as if saying:

• As for high heels, I don’t like them.

But the original order is the most straightforward.

Because porque is the conjunction meaning because.

There are several similar-looking forms in Spanish:

• porque = because
• por qué = why
• el porqué = the reason
• por que = less common combination in certain structures

In this sentence, the speaker gives a reason:

• porque me canso enseguida = because I get tired quickly

So porque is the correct form.

No, you do not need yo.

Spanish often leaves out subject pronouns because the verb ending already shows the subject.

• me canso already tells us the subject is I
• gustan tells us the subject is plural

So:

• No me gustan los zapatos de tacón porque me canso enseguida is completely natural

You could add yo for emphasis:

• ...porque yo me canso enseguida

But normally it is unnecessary.

Usually it means I don’t like high heels.

If you want to say that something does not suit you physically or stylistically, Spanish often uses other expressions, such as:

• No me quedan bien. = They don’t look good on me / they don’t fit me well.
• No son para mí. = They’re not for me.
• No me resultan cómodos. = I don’t find them comfortable.

So in this sentence, the idea is clearly about not liking them, and the reason given is:

• porque me canso enseguida = because I get tired quickly

Yes, absolutely.

• me canso rápido = I get tired quickly
• me canso enseguida = I get tired very quickly / I get tired straight away

Both are natural.
Enseguida often feels a little more like very soon / almost immediately, while rápido is simply quickly.

In Spain, enseguida is especially common and natural in everyday speech.