Jeg leder efter min billet, men den ligger i min lomme.

In Danish, at lede efter is a fixed expression meaning to look for.

• lede = to look / search
• efter = after / for

So Jeg leder efter min billet literally looks a bit like I search after my ticket, but the natural English translation is I am looking for my ticket.

You should learn lede efter as a unit.

Because leder is the present tense form of at lede.

Danish present tense is often formed by adding -r to the infinitive:

• at lede = to look for
• jeg leder = I look / I am looking

So Jeg leder efter min billet means I am looking for my ticket or I look for my ticket, depending on context.

Because billet is a common gender noun in Danish, and common gender nouns take en and min.

• en billet = a ticket
• min billet = my ticket

If a noun is neuter, it would take et and mit instead.

For example:

• et hus = a house
• mit hus = my house

So the possessive must match the noun’s grammatical gender.

Because den refers back to billet, and billet is a common gender noun.

• common gender noun → den
• neuter noun → det

So:

• en billet → den
• et brev → det

In this sentence, den ligger i min lomme means it is in my pocket, and den refers to min billet.

Danish often uses specific verbs for the position of things, where English often just says is.

ligger literally means lies or is lying. It is commonly used when something is in a resting position, especially something considered to be lying somewhere.

So:

• Den ligger i min lomme = literally It lies in my pocket
• natural English: It is in my pocket

This is very normal Danish. In many everyday situations, Danish prefers ligge, stå, or sidde instead of a general be.

These verbs often describe how something is positioned:

• ligge = lie / be lying
• stå = stand / be standing
• sidde = sit / be sitting

Examples:

• Bogen ligger på bordet = The book is on the table
• Flasken står på bordet = The bottle is on the table
• Billedet sidder på væggen = The picture is on the wall

In your sentence, billetten is thought of as lying in the pocket, so ligger is the natural choice.

Because the ticket is inside the pocket, not on it.

• i = in / inside
• på = on / on top of

So:

• i min lomme = in my pocket
• på min lomme would sound wrong here unless something were physically attached to the outside of the pocket

Because men works like but in English and usually starts a new main clause. After men, Danish keeps normal main-clause word order.

So:

• Jeg leder efter min billet
• men den ligger i min lomme

This follows the standard Danish main clause pattern, where the finite verb is in second position:

• den = subject
• ligger = finite verb

Compare this with words like fordi or at, which can introduce subordinate clauses and change the word order.

Usually, jeg leder efter min billet is the most natural everyday phrase.

søge can mean seek, search for, or apply for, but it often sounds more formal or is used in specific contexts.

For example:

• Jeg leder efter mine nøgler = I’m looking for my keys
• Jeg søger arbejde = I’m looking for work / seeking employment
• Jeg søger om visum = I’m applying for a visa

So for a lost ticket, leder efter is the most natural choice.

Very often, yes, but it depends on the kind of ticket.

billet is commonly used for:

• train ticket
• bus ticket
• concert ticket
• cinema ticket

In some contexts, Danish may use other words, but billet is the normal general word and fits perfectly here.

Very natural. It sounds like an ordinary everyday sentence.

In speech, a speaker might stress men or lomme slightly to show the contrast:

• Jeg leder efter min billet, men den ligger i min lomme.

That contrast is the key idea: the speaker is searching for something that is actually already in their pocket.

They are spelled the same, but the meaning depends on context.

In your sentence, leder is the verb looks for / is looking for.

Danish also has leder as a noun meaning leader.

A learner should mainly rely on context:

• Jeg leder efter min billet = I am looking for my ticket
• Han er leder af teamet = He is the leader of the team

So yes, the form is the same in writing, but the grammar and meaning are different.