My daughter got COVID two weeks ago. She self-quarantined in her room for a week, but was back to normal in three days.
My son and I are once-vaxxed (in 2021). Neither of us got it.
When I say my daughter “got COVID,” I mean she (a) tested positive according to one of the government-supplied test kits, and (b) had a measurable fever for two days.
Your experience sounds typical.