I feel so slow and dumb

I've had agoraphobia for years and I barely go out. I recently started a sewing class before that I tried driving.

I feel like I'm struggling. I feel distracted and feel like I'm slow at picking things up. It's like struggle to compute what others are saying or what I need to do.

I always feel so dumb. I used to be quite bright as a child and teen. I feel like I've become so slow and scatter brained.

I don't pick things up easily and can't problem solve. It's like my brains is half fog and mush. I say the wrong thing and act the wrong way and I feel like I can't connect.

Does anyone experience the same? I'm finding it hard to keep going out when i feel so slow.