Αν πετύχεις συνεργάτη που να ακούει προσεκτικά, η ομαδική δουλειά γίνεται πολύ πιο εύκολη.

After αν, Greek normally uses the subjunctive, not the future tense with θα.

So αν πετύχεις means if you find / if you happen to find.
The form πετύχεις here is the aorist subjunctive, which is very common in if clauses referring to a possible future situation.

A useful pattern is:

• αν + subjunctive = if
• not αν θα ...

So:

• Αν πετύχεις... = If you find...
• not Αν θα πετύχεις...

The aorist here does not mean past. It shows the action as a single whole event: finding a suitable collaborator.

Not in this sentence.

The verb πετυχαίνω / πετύχω can mean different things depending on context:

• succeed
• achieve
• meet / come across / find

Here, because it takes a person as its object — συνεργάτη — it means something like:

• find
• come across
• get hold of
• be lucky enough to find

So Αν πετύχεις συνεργάτη... is closer to If you find a collaborator... than If you succeed a collaborator...

Greek does not require an indefinite article the way English requires a/an.

So both of these are possible:

• πετύχεις συνεργάτη
• πετύχεις έναν συνεργάτη

In this sentence, leaving out έναν sounds natural and slightly more general. It is like saying:

• if you find a collaborator
• if you manage to find some collaborator

Also, συνεργάτη is in the accusative singular, because it is the direct object of πετύχεις.

It describes the kind of collaborator being talked about.

So:

• συνεργάτη = a collaborator
• που να ακούει προσεκτικά = who listens carefully / who will actually listen carefully

This is a relative clause, but it is not just stating a simple fact. It gives a desired or qualifying characteristic.

So the idea is not merely a collaborator who, as a fact, listens carefully, but more like:

• a collaborator who will listen carefully
• a collaborator that is capable of listening carefully
• the kind of collaborator who listens carefully

Because they do different jobs.

• που introduces the relative clause: who / that
• να gives the clause a subjunctive, more non-factual or desired meaning

Compare:

• συνεργάτη που ακούει προσεκτικά
  = a collaborator who listens carefully
  This sounds more like a straightforward description of a real characteristic.

• συνεργάτη που να ακούει προσεκτικά
  = a collaborator who would listen carefully / who can listen carefully
  This sounds more like a sought-after quality.

In other words, που να... often appears when Greek is talking about the kind of person or thing one hopes to find.

This is about aspect.

Greek often chooses between:

• imperfective subjunctive: να ακούει
• perfective subjunctive: να ακούσει

Here, να ακούει is used because the meaning is ongoing or habitual. The sentence is talking about a collaborator who listens carefully as a regular behavior.

So:

• να ακούει προσεκτικά = to listen carefully, as a habit / in general

If you said να ακούσει, it would sound more like:

• to listen on a particular occasion
• to hear someone out once
• to complete the act of listening

In this context, the imperfective fits better because good teamwork depends on repeated, consistent careful listening.

γίνεται means becomes, gets, or sometimes turns out to be.

So:

• η ομαδική δουλειά γίνεται πολύ πιο εύκολη
  = teamwork becomes much easier

This suggests a change of state: if you find such a collaborator, teamwork gets easier as a result.

If you used είναι, the sentence would sound more static:

• η ομαδική δουλειά είναι πιο εύκολη
  = teamwork is easier

That is possible in some contexts, but γίνεται is more natural here because the first clause creates the condition that causes the improvement.

πιο εύκολη means easier.
πολύ πιο εύκολη means much easier.

So:

• πιο = more
• πολύ πιο = much more

This is a very common Greek pattern with comparatives:

• πιο καλός = better
• πολύ πιο καλός = much better

Here, πολύ strengthens the comparison.

Because it agrees with η ομαδική δουλειά, which is:

• feminine
• singular
• nominative

Greek adjectives must agree with the noun they describe.

So:

• η δουλειά = feminine singular
• εύκολη = feminine singular form of εύκολος

That is why the sentence has:

• η ομαδική δουλειά γίνεται πολύ πιο εύκολη

not:

• εύκολος
• εύκολο

Greek uses the definite article much more often than English, including with general or abstract ideas.

So η ομαδική δουλειά can mean:

• teamwork
• the teamwork

depending on context.

Here it is a general statement, and Greek naturally uses the article:

• η ομαδική δουλειά

This is very normal. English often drops the article in cases where Greek keeps it.