Struggling with Thought and Expression: Seeking Help for Mental Clarity - Psychiatry

The loss of cognitive and analytical abilities has severely hindered my ability to express myself verbally?

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Hello, Doctor.
I have always struggled with my thinking and expression abilities.
I am seeking your help primarily to address my issues with thinking, expressing myself, and interacting with others.
Due to my poor communication skills, I have many questions and situations that I haven't been able to articulate clearly during my recent visits, so I am trying to write them down in hopes of conveying them more accurately to you.
Thank you for being willing to listen.
Doctor, I feel that I have lost my ability to think and analyze, which severely affects my ability to express myself verbally.
I am not exaggerating when I say that at home, I can only talk about my illness with my closest family member, my mother.
For several years, I have been unable to discuss anything other than my health (and even when discussing my illness, I struggle to articulate my thoughts).
I hope you can help me determine the reasons behind my inability to express myself.
I am unsure if it is due to cognitive decline, the challenges of being a single parent, or years of solitude while managing a store without social experiences.
My inherent limitations combined with insufficient training have all contributed to this situation.
I find myself wanting to know what to do, but I feel stuck, as this is not a problem that can be improved simply by interacting with more people.
The inability to express myself verbally prevents me from engaging with others (even though the people I encounter are very friendly).
There are several factors contributing to my inability to speak, and I am unsure where the problem lies in my brain.

1.
I lack personal opinions and feelings about anything.
Regardless of my experiences, such as traveling, I can only say that I went to Korea, and that's it.
However, I see others, both young and old, who can naturally express their thoughts and feelings about their experiences without needing to consciously remember them.
They can articulate their experiences instinctively without having to think of the right vocabulary.
In contrast, I cannot retain the things I see while traveling, and I have no thoughts or feelings to express, leaving my mind blank after any experience.
2.
I lack the ability to think and analyze.
New information does not enter my mind in a way that allows me to convert it into words.
I try to learn through listening to lectures, watching the news, reading books, attending classes, and watching movies, but while I can understand the words and know what is being said, I cannot comprehend or transform that information into language.
I lack the ability to summarize and organize information.
I am unsure if this is due to poor memory, where I forget things immediately after hearing them, or if my expressive abilities have deteriorated (I struggle to find words, cannot describe meanings, and my mind goes blank, compounded by my inability to remember or learn new things).
For many years, I have faced difficulties in thinking and expressing myself, to the point where I have lost the ability to speak.
I cannot communicate or think, which prevents me from interacting with others.
Some may see that I can write these words and think that I am capable of thought, but what they do not realize is that it took me nearly an hour to compose even a single sentence.
Organizing fragmented thoughts that suddenly appear and then vanish requires immense effort, and I find myself anxiously pulling my hair every second.
Even describing relatively straightforward matters can take me several days of intense thought, let alone responding in real-time conversations (outside of discussing my illness, I often find myself at a loss for words).
Doctor, I do not understand what is happening or what I should do.
Am I inherently less intelligent? Yet, if that were the case, why can I read and write, and understand spoken language but still struggle to express myself? Is it a result of a lack of training from a young age? I have tried to improve my speaking skills by reading news articles or texts aloud, but when it comes time to express myself, I still cannot find the words.
You may ask how I manage to communicate in my current life, but at the store, I only need to say simple phrases like "Hello," "How much is this?" or "Thank you." When buying something, I can say, "Boss, I want to buy this," and I can manage basic interactions like asking if someone has eaten.
However, when it comes to engaging in conversation, my mind is completely unable to think or analyze, and I have no thoughts to share.
I can only smile blankly or nod, which severely impacts my judgment and prevents me from expressing fragmented thoughts.
If I were to encounter bad people in society, I would be in serious trouble.
My current state feels like I have lost my (thought) perspective, (feeling) emotional preferences, (judgment) analytical thinking, and (communication) verbal expression abilities.
I feel like a person without the capacity for thought, judgment, or emotional connection, unable to learn new things, and only capable of rote speech.
Living a life that consists solely of eating, working, and sleeping is terrifying.
I fear the loneliness of not being able to emotionally connect with others or learn new things.
I am desperate to find the root of my problems and do not know how to restore my brain's ability to feel and express thoughts.
These words have taken me several days to piece together, with each sentence taking nearly an hour to formulate.
Doctor, I hope you can help me understand what is wrong with my brain and what I should do.
Thank you for your assistance.

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Liangliang, 20~29 year old female. Ask Date: 2019/07/18