I think yer going a bit overboard on the number of jabs. Most peeps in the US have gotten 2 jabs, and some folks, like myself, got a third. I have not felt any major symptoms from the thing since then (3rd shot was a year ago), although on two occasions after my first bout with it in 2020, I have had a mild sore-throat for a day. And that was over the past 6 months.
For some people, COVID can be fatal without being vaccinated. One never knows on that bit.
7 or so years ago I was bitten by a violent dog on a dark street at night. Since the owner could not be identified at the time, I was forced to get the rabies vaccine regimen, because rabies is fatal. Like COVID MIGHT be.
So I got the shots, 14 or so or whatever it was, and I lived. It turned out that the dog was not rabid, because the owner was later found, and it was just a neighborhood dog that got loose and was territorial.
Same with the COVID vax. Isn't it better to err on side of caution and get the vax in case you needed it?
Better to have something you do not need, than to need something you do not have.