how do you have safe anal sex?

so I know gay men have a higher chance of getting aids and I found out it transfers by fluids from sperm,vaginal, and blood but gay men have anal and I want to know if women who have anal have a high chance of getting aids as well, I’m curious since I recently started enjoying anal but have a lot to learn with how to clean and prep for it like do you douche every time you do anal or occasionally because I also heard it can remove the good bacteria and cause higher rates for stds honestly I would just like to know how you can be safe and clean to do anything with that Region sex and rimming