Covid vaccine question

I know that what I am about to ask is a very personal matter.
But I find myself conflicted and wonder if anyone can provide input that will move me one way or another.
I am returning to Zihua tomorrow.
I have 3 Covid shots total- all Pfizer.
The original two- interesting the second one was in Zihua.
And 1 booster- over a year ago.
I'm thinking about the latest booster.
I know there have been several new variants that have surfaced in the last year.
I am 76, consider myself in very good condition health wise.
I try to practice the obvious protocols.
I am not an adamant mask wearer- but have no issue where it seems appropriate.
I am not a 'bar fly' but I do enjoy going to clubs listening to music.
I don't avoid social circles and gatherings but am not attached to hanging out in any groups.
I spend a lot of time by myself in my fabulous condo.

Feedback?