Honestly, I’m introverted by nature, which is whyand I don’t have manya lot of friends, and. I’m also pretty bad at reading people. Honestly, I’m introverted by nature, and I don’t have a lot of friends. I’m also pretty bad at reading people.

a lot of friends = sounds better and more fluid Need to separate the clauses since they are 2 different topics.

Honestly, I’m introverted by nature, which is why I don’t have many friends, and. I’m also pretty bad at reading people. Honestly, I’m introverted by nature, which is why I don’t have many friends. I’m also pretty bad at reading people.

I broke up this sentence to make it more readable.

HTo be honestly, I’m introverted by nature, which is why I don’t have many friends, and I’m also pretty bad at reading people. To be honest, I’m introverted by nature, which is why I don’t have many friends, and I’m also pretty bad at reading people.

There’s a supermarket near our apartment, and there’s a girl who works at the checkout count that has a cashier who seems really suspicious to me. There’s a supermarket near our apartment that has a cashier who seems really suspicious to me.

Nothing wrong with the sentence but I am noticing that you are using the word "and" too much. Also, girl who works at the checkout counter = cashier

There’s a supermarket near our apartment, and there’s a girl who works at the checkout counter who seems really suspicious to me. There’s a supermarket near our apartment, and a girl who works at the checkout counter seems really suspicious.

repetitive "there's". can omit "to me" since "seems" already implies you have an opinion of her.

Every time I go there, I can feel her unfriendly gaze, and something odd always happens whenthere's always something every time she’s servinges me. Every time I go there, I can feel her unfriendly gaze, there's always something every time she serves me.

Something odd kind of insinuates "peculiar" instead of a negative experience. I think "There's always something" is kind of a familiar expression, this is what I would have said if I was expressing the same sentence so take it as you may.

Every time I go there, I feel her unfriendly gaze, and something odd always happens when she’s serving me. Every time I go, I feel her unfriendly gaze, and something odd always happens when she’s serving me.

"there" is repetitive. It already exists in the previous sentences.

For example, she ignored me when I asked for a bag three times in a rowrepeatedly. For example, she ignored me when I asked for a bag repeatedly.

better to just add an adverb

Another time, she gave me a torn bill / note as change. Another time, she gave me a torn bill / note as change.

In the US they say bill, in the uk they say note

And once,There was also another time when she took a break right after I walked up to her counter. There was also another time when she took a break right after I walked up to her counter.

Don't start sentences with connectors "and", "but" etc.

And oOnce, she took a break right after I walked up to her counter. Once, she took a break right after I walked up to her counter.

I had never experienced anything like that in my hometown. I never experienced anything like that in my hometown.

Not sure why but had doesn't sound right to me here.

I hadve never experienced anything like that in my hometown. I have never experienced anything like that in my hometown.

wrong verb

Who knows…? Who knows?