What happened to me in Spain.1

In 2012, when I was just 14 years old, I went backpacking in Spain and Morroco.
For going To go to Spain, I had to take a flight from Korea to Spain via Turkey 'ALONE'. It was my first time taking a flight alone and I could only speak basic English such as 'Hello' and 'How are you?'.

You phrased the last sentence better in the original version, so I changed the sentence back to that and wrote the same correction a made the first time.

Although I arrived at Valencia airport safely, but the flight arrived sooner than the expected time of arrival by nearly 1 hour, so I asked to help from some Spanish people, they didn't tell me how I can could use the pay phone. I wandered there for nearly 30 minutes and before could meeting my sister. She said "Why are you in here now?" and "Why do have you wandering without calling to me? You are insane." haha. Then I arrived at my sister's house and there were her two room mates from Spain and Germany. The Spanish room mate greeted to me with by kissing my cheek. I was really shocked (at the time I didn't know how people greeted in Spain) and he looked saw my embarrassed face and said sorry. Now I want to say him "Christian, I'm sorry about I didn't not know how I to greet to in Spain. I just knew the word 'Hola'.

There are a lot fewer mistakes in this version than in the first version, but there are also a few additional ones. You also rephrased a few sentences in this version as well. After the corrections, I thought the original phrasing sounded more natural overall, but this version definitely has a lot fewer mistakes.

What happened to me in Spain.1

On 2012 , I was just 14 years old , I went backpacking in Spain and Morroco.
For When going to Spain, I had to take a flight from Korea via Turky to Spain 'ALONE'.It was my first time taking a flight alone and even I just could say though I could speak really basic English such as Hello and How are you? .Although I arrived at Valencia airport safely but the flight arrived sooner than expectated time of arrival by nearly 1 hours.So I asked to for help to  from some spanish people, they didn't answer how I can use the pay phone.I wandered there around for nearly 30 minutes and could before I met my sister. She said " Why are you in here now? and Why do you wander without calling to me? You are insane." haha.Then I arrived at my sister's house and there were two of her room mate roommates from spain and germany. The spanish room mate greeted to me with kissing a kiss on my cheek, I was really shocked ( at that time I don't know how people greet in spain) and he looked my embrressed face said sorry when he noticed I was embarrassed he said sorry. Now I want to say him " Christian, I'm sorry about I didn't know how I greet to spaish the way the Spanish greeted people. I just knew the word "Hola".

잘 했어 수인야 ^^.