I am 49yo, male. I'm healthy, but mildly overweight. I was very fit prior to the lockdowns (Melbourne, Vic, Australia), but I lacked the disciplinary wherewithall to maintain that fitness over the past couple of years.

I have chosen not to receive any Covid19 vaccinations and so I am "unvaccinated". I thought it was never going to happen, but eventually I contracted covid19, over Easter period this year. I too experienced myalgia, a mild fever. I also had a sore throat for about 2 days. I didn't completely lose my sense of smell, but coffee (for example) didn't taste great. Same with wine. That anosmia, such as it was, persisted for a week or two.

But that's it really. It was all over in about 2.5 days. I would not describe what I experienced as "harsh". I've had Influenza, and that was harsh. Sat me on my arse for a solid week. But not this. By day 4, I was doing household chores and more or less back to normal (mild anosmia not withstanding).

So, YMMV. :-)