I wear a mask whenever I go out and I get a flu shot every year.
I will add I am in decent shape (my GF may disagree! ) and not in any high risk categories.
My experience, August 2020 no vaccines I got Covid from my son. I woke up 5 days after he had it and I could not smell or taste my morning coffee.
I felt pretty bad for three days. Felt kind of like a mild flu. My breathing was a little labored. After 5 days I felt fine.
Interesting note my daughter did not get Covid then. (We all live in the same house.)
I got my two Pfizer vaccines. The first vaccine I felt fine. The second vaccine I felt worse then when I had Covid for about 5 days.
Then about a month ago, I got a text saying it was 6 months since my two vaccines and I could get the booster.
The next day I woke up and had Covid (Omicron). This time it was from my daughter. She also had both vaccines.
Another interesting note she had a bad headache for 5 days. She never gets headaches.
I tested her and she was positive for Covid. My son had both vaccines and he did not get Covid this time.
*** Edit my brother in law who is overweight but has no other high risk factors had a really tough time with this round of Covid.
He was bed ridden for two weeks. His doctor gave him a z-pack for antibiotics. He was better the next day.
I don't know if the z-pack did anything. He may have just gotten over covid, or covid caused other problems which the z-pack helped alleviate.
I felt worn out, sore throat, very mild fever, and night sweats for about 10 days. It felt more like a bad cold.
Waited the 14 days since I had Covid and got my booster plus a flu shot.
*** Edit - I felt fine after my third booster/flu shot.
That has been my experience with Covid.
As for Shingles, it is not uncommon now for people over 40 in the US to get Shingles even if they were vaccinated when young.
As far as I know, Shingles is just the adult version of what we in the US call Chicken Pox.
*** Edit same brother in law as above got a VERY bad case of shingles three years ago.
A final note, A few years ago I use to travel to India for work once a year.
First time I went I received about 10 shots some combos.
I think I received every vaccine I ever received as a child again.
Second time I went to India I got about 6 more shots.
The only shot I did not get was TB. Not because it is not present in India, but because the US does not vaccinate for it anymore.
IMHO, Covid is going to be like the FLU and they will have a vaccine for a different strain every year. (I hope not, but ...)
Hopefully everyone has a Healthy and Happy 2022!