Anxiety is not depression and it can struck you even if everything is fine. Even the happiest people can be anxious about something (health, career, children …), it’s just normal behavior as long as it doesn’t abnormally lasts.

Medication really helps to get over it and stop the circle when symptoms are moderate.

You are posting your symptoms on an online forum expressing concern for a medical issue you’ve either heard about from the media or anecdotal evidence from other people that have heard about it from the media.

It would seem to me, based on the above, that you are experiencing anxiety about the long COVID issue and thereby exasperating the “symptoms”.

Beware of psychologization of disease that isn't fully understood yet. There were also times when scurvy was considered another form of laziness and cholera an indication of moral failing.

I did that hoping that the information I provide (even though somewhat personal) could help others and form an interesting discussion. At least to me, discussions on HN where people share personal experiences provide a lot more value than reading articles on the topic.