Different people have different behaviors(1)

Recently, I have experienced two things which gave me different feelings. Let me tell explain:

Early one morning, I went shopping to a supermarket where and I was just opening approaching the door. I had parked my car in the underground parking garage, and then, as usual, went to the door of the entry entrance where there is an escalator which can carry me to the shop behind it [1]. When I was passing an elevator, I glanced at a couple who was were going into it [2]. After unintentionally exchanging glances unintentionally [3] with the couple, I continued to go toward the entry where there was about ten meters opposite the elevator [4]. Wondering why the couple took the elevator instead of taking the escalator, which was more convenient for people going to the supermarket;, I got in front of approached the entry and pushed the glass door. The door was still locked since it was too early. At that time, I got understand I then understood why the couple were taking the escalator elevator. I immediately turned back to the escalator elevator immediately [5], trying to catch into it, because I saw they were just opening the door. If they willed were willing, they can could have pressed the button to let me in, but they didn’t. Although it was a tiny thing which did not bother me a lot, I wonder why the couple was so indifferent to not tell me the door was closed, by the way even though we exchanged the glances.

Italki limits the length of replies.  I have to add my comments separately.

----

[1] This sentence is long and hard to read. I have attempted to remove any unnecessary words, and retain those words which are relevant to your story.

[2] A comma introduces two problems. First, it breaks the flow of your sentence. Second, the latter part of your sentence needs to use pronouns to refer back to the start of the sentence. Plese compare the following sentences. Why one flows betters?

-- "When I was passing an elevator, I glanced at a couple who were going into it."

-- "I glanced at a couple going into an elevator."

Except for the corrections shown, your sentence was fine. This comment is to help improve your writing style.

[3] Your location of the adverb 'unintentionally' was fine, but less natural than where I have suggested. Keep in mind our chats about keeping adverbs and adjectives as close as possible to their verbs and nouns.

[4] I don't understand your meaning here. Perhaps either the following better expresses your meaning:

-- "I continued toward the escalator, because the elevator was a further ten meters away."

-- "I continued toward the escalator, because the elevator was ten meters away in the opposite direction."

[5] Again, an adverb should be as close as possible to its verb. Let's look at your sentence:

-- "I turned back to the escalator immediately trying to catch it."

You have three verbs, 'turned', 'trying', and 'catch'. To which verb does 'immediately' belong? Due to its proximity, it seems to belong to 'trying'. That is, you were "immediately trying" to catch the elevator. Not only is that not your meaning, it sounds awkward. The following is more natural:

-- "I immediately turned back to the escalator, trying to catch it."

Different people have different behavior(1)

Recently, I have experienced two things which gave me different feelings. Let me tell (This phrasing is a bit unnatural):

Early one morning, I went shopping to a supermarket where was just they were opening the door. I had parked my car in the underground parking garage, and then, as usual, went to the door of the entryway where an there was an escalator that could carry me to the shop behind it. When I was passing an elevator, I glanced at a couple was who were going into it. After changing glances unintentionally with the couple, I continued to go toward the entryway where there was about ten meters (of space?) opposite the elevator. Wondering why the couple took the elevator instead of taking the escalator which was more convenient for people going to the supermarket; I got in front of the entryway and pushed the glass door. The door was still locked since it was too early. At that time, I got understand understood why the couple taking took the escalator. I turned back to the escalator immediately trying to catch get into it, because I saw they were just opening the door. If they wanted to willed, they could have pressed the button to let me in, but they didn’t. Although it was a tiny thing, which did not bother me a lot, I wonder, why the couple was so indifferent to tell me the door was closed, by the way we exchanged the glances.