אני אוהבת כשיש דיאלוג טוב, ולא רק הרבה מוזיקה ורעש.

Because אוהבת is the feminine singular form of love / like in the present tense.

• אני אוהבת = I (said by a woman/girl) love / like
• אני אוהב = I (said by a man/boy) love / like

Hebrew present-tense verbs often show gender, even when the subject is אני.

כשיש is made of:

• כש־ = when
• יש = there is / there are

So כשיש דיאלוג טוב literally means when there is good dialogue.

In natural English, depending on context, it can also feel like:

• I like it when there’s good dialogue
• I like when there’s good dialogue

Hebrew does not normally use a present-tense form of to be the way English does.

So instead of saying something like when dialogue is good, Hebrew often says:

• כשיש דיאלוג טוב = when there is good dialogue

This is a very common Hebrew structure.
יש is the standard way to express there is / there are in the present.

In Hebrew, adjectives usually come after the noun they describe.

So:

• דיאלוג טוב = good dialogue
• literally: dialogue good

This is normal Hebrew word order.
Also, the adjective must match the noun in gender and number.

Here:

• דיאלוג is masculine singular
• so the adjective is טוב, also masculine singular

It is a normal, widely used Hebrew word, and yes, it is a loanword.

Hebrew speakers commonly use דיאלוג for dialogue, especially in everyday speech, reviews, media, and conversation.

A more traditionally Hebrew alternative can be דו־שיח, but דיאלוג is very common and natural.

ולא רק means and not only or more naturally here and not just.

So the sentence is contrasting two things:

• the speaker likes good dialogue
• and not just a lot of music and noise

It gives the feeling of:

• I appreciate substance, not only loud or flashy sound

Both patterns exist in Hebrew, but הרבה + noun is much more common in everyday speech.

So:

• הרבה מוזיקה = a lot of music
• מוזיקה רבה = more formal/literary, and less likely in casual speech

Since מוזיקה is usually treated as an uncountable noun, הרבה works very naturally here.

In Hebrew, רעש often works like the uncountable English word noise.

So:

• הרבה מוזיקה ורעש = a lot of music and noise

If you wanted to emphasize separate individual sounds, you could use רעשים = noises.
But in this sentence, רעש as a general mass noun is the most natural choice.

Here it most naturally means something general:

• I like it when there is good dialogue

It is not necessarily about one specific event. It can describe the speaker’s general taste, for example in:

• movies
• TV shows
• theater
• games
• stories

Hebrew often uses כש in this broad, general way.

Yes, but the tone would be different.

• כש = normal, everyday when
• כאשר = more formal or written when

So:

• אני אוהבת כשיש דיאלוג טוב... sounds natural and conversational
• אני אוהבת כאשר יש דיאלוג טוב... is grammatical, but more formal and less casual

Because Hebrew often does not need a separate dummy object like English it in this kind of sentence.

English says:

• I like it when there’s good dialogue

Hebrew simply says:

• אני אוהבת כשיש דיאלוג טוב

So the structure is more direct in Hebrew.
That is completely normal.

The comma is helpful because it marks a contrast or continuation:

• I like when there’s good dialogue, and not just a lot of music and noise.

In informal writing, punctuation in Hebrew can vary a bit, but this comma is natural and makes the sentence easier to read.