Brain fog, anxiety, panic attacks, need your opinion

This may seem weird, but I need help:
If I tell you to conceptualize something like: "she's not happy ", what happens in your mind? Or "there are no bananas left in the fridge". Or ''Not all the kids were big''.

When you guys read a text or listen to someone talking, to understand them, do you need to visualize the things they are saying or the words themselves are enough to make you understand?

I recently developed severe brain fog and I have a hard time understanding text or people talking and my logic seems gone. I feel like im saying gibberish and my mind is blank all the time. I have difficulty with negative sentences especially. I'm doubting my memory (did I actually do it?) and my logic. I repeat the words (text or what other people are saying) in my head lots of time but it does not become more clear. Now just thinking gives me like a electrical zap feeling/anxious feeling in my brain. Too much of zaps and panic attacks occures, burning skin sensation, heart pounding, feeling like my adrenaline is killing my body slowly. And yeah I fear saying something blatantly stupid or making so stupid a mistake people will think I have 50 IQ.