I got Covid at the end of August. Knocked me for a loop for a day-and-a-half, where I was really tired. But after the second day I recovered pretty quickly and haven't had issues since. I had gotten the Phizer vaccine back in May/June 2020 and no boosters. I don't know if the vaccine helped or not, since the idea behind boosters is that the effectiveness of the vaccines fades (which doesn't sound like any vaccine I ever heard of, but that's another story).
I usually get the flu shot each year, so I will probably get a booster soon, since my doctor recommended that I wait until they have a new one out. I don't worry about it one way or the other. If the alien lizard men wanted me dead, I'd be dead already.