thats ~3-5 times per day and that's it, is it still too much?
Yes, that is a lot.
if I wash even less then how about bacteria and old skin cells that stay etc?
Acne is really more of an internal cause than an external cause. Working on getting the hormones under control will do more to solve the problem than topical treatments.
and I dont know about citric acid but I do use lemon juice, I drink it together with teas, and I add it to face masks as well, does that count?