The j&j shot is available in CA.
Go to vaccines.gov and enter your zip code and check only the j&j box.
I live in Sonoma County...there are plenty of pharmacies in my town that have it in stock.
I’m sure your town would have it too, or one you could drive to.
Why have you not checked into getting the shot you want?
Oh I’m talking about my 16 year old daughter. She’s only eligible for the Pfizer, the least effective and lamest vaccine.
I don’t know why the J%J or Moderna didn’t get approval for 16 year olds yet—so far they are still 18+ only.
I also had to do some legwork to find the J&J vaccine but I was able to do so.