I read and re-read your account from the first few paragraphs. I felt a bit of the terror on reading it because it is exactly how I've been feeling the past 2-3 years! It can be a small piece of officialdom, like having to pay a fine, but the process of doing it makes me feel exhausted for days.
In my case, I pinpoint it to the too many inconveniences I've had to go through during the pandemic. And, when someone places a stumbling block - even if it's a routine procedural one - before me, it feels sometimes like they are conspiring to stop me from doing what I need to do.
All along, I thought it was just me. I didn't feel like mentioning it to people because, when I did mention it to family, they thought I was being terribly self-indulgent.