Если тебе не нравится мой план, сначала выслушай меня до конца.

Russian uses a different structure with нравиться from English to like.

• тебе = to you in the dative case
• нравится = is pleasing
• мой план = my plan

So тебе не нравится мой план literally works like:

My plan is not pleasing to you.

That is why тебе is used, not ты.

Also, не любишь would mean you do not love / you do not like in general, and it is usually stronger or less natural here. For reacting to an idea, proposal, film, song, etc., нравиться is the normal choice.

Because with нравиться, the thing that is liked is grammatically the subject.

In this sentence:

• тебе = experiencer, in the dative
• мой план = subject, in the nominative
• нравится agrees with план

Compare:

• Мне нравится фильм. = I like the film.
• Literally: The film is pleasing to me.

So мой план stays nominative because it is the thing doing the pleasing.

Because the subject is singular:

• план = singular masculine noun

So the verb is singular too:

• нравится

If the subject were plural, you would use нравятся:

• Если тебе не нравятся мои планы... = If you don’t like my plans...

Выслушай comes from выслушать, which means to listen to someone all the way through, to hear someone out.

That is different from слушай, which simply means listen.

So:

• слушай меня = listen to me
• выслушай меня = hear me out

In this sentence, выслушай is better because the speaker is asking not just for attention, but for a complete hearing before judgment.

Literally, до конца means until the end.

In this sentence it goes with выслушай меня and means:

• hear me out completely
• let me finish
• listen to me to the end

So выслушай меня до конца is a very natural way to say hear me out.

Меня is the accusative form of я.

It is used because выслушать takes a direct object:

• выслушать кого? = to hear out whom?
• меня = me

So:

• выслушай меня = hear me out

Сначала means first or at first.

Here it means something like:

• first hear me out
• before reacting, listen to me completely

It gives the sentence a sequence:

1. сначала выслушай меня до конца
2. then decide whether you dislike the plan

So it adds the sense don’t judge yet—listen first.

In Russian, subject pronouns are often omitted when the verb already makes the person clear.

• выслушай is an imperative singular form
• it already means you, hear out...

So Russian normally says:

• выслушай меня not
• ты выслушай меня

Adding ты is possible, but it is usually for emphasis, contrast, or emotion.

It is the singular informal imperative of выслушать.

That means the speaker is talking to:

• one person
• in an informal you form

If you wanted the polite/formal or plural version, you would say:

• Если вам не нравится мой план, сначала выслушайте меня до конца.

So:

• выслушай = informal singular
• выслушайте = formal singular or plural

Because Если тебе не нравится мой план is a subordinate clause introduced by если (if).

Russian normally separates this kind of clause with a comma:

• Если тебе не нравится мой план, сначала выслушай меня до конца.

This is true whether the if-clause comes first or second:

• Если тебе не нравится мой план, ...
• ..., если тебе не нравится мой план.

Yes, Russian word order is flexible, though different orders change the emphasis.

The given sentence is natural and neutral:

• Если тебе не нравится мой план, сначала выслушай меня до конца.

You could also say:

• Если тебе не нравится мой план, выслушай меня сначала до конца.
• Сначала выслушай меня до конца, если тебе не нравится мой план.

But the original version is probably the smoothest for everyday speech.

It puts the condition first, then the request, and сначала is placed naturally before the imperative verb.