The charm of short stories lies in their “light, free-spirited” nature. They don't have to carry the burden of lengthy buildup or airtight logic. Each story is like a seed unto itself. Some readers find its sprouting dazzling; others feel stifled waiting for it to break through the soil. Both reactions are perfectly normal.
If you like one, pick it up and tuck it into your pocket. Take it out when you have a moment, and you may find a little flavor in it. If you don't, simply wave it aside and keep walking; it won't slow you down. It's like browsing a night market: some people like sweet food, others crave spicy. Everyone finds what they want, with no need to accommodate anyone else. That's probably the most comfortable way to enjoy a short story. Each one is a door that opens for a little while, revealing the fears, regrets, and unspoken obsessions buried deep in the human heart. There's no need to dig into their origins. Just hold your breath as you turn the page, because the “abnormality” in the next story may be lurking somewhere right beside you.