I am sure that you would be shocked if I told you how seldom I shower. I feel very insecure in the shower as I am very short-sighted; I do not bath as I cannot get in and out without pain.
I also cannot be bothered to wash my hair more frequently than it needs - and it is hard not to finish up washing your hair when you are in the shower.
I think it is possible to wash too much! - seriously, your skin has its own eco-system which does not need to be disturbed every day!
I do not wash down my shower with anything except water - I have a biodigester which does not like bleach, and, even if I was on mains drainage, our rivers do not need all this dreadful stuff discharged into them.
And using showers every day is wasteful of water, wasteful of power to heat the water, and accumulates plastic waste from the bottle of stuff used.
I do not smell - I use a very good deodorant stick (Mitchum unscented), each day I wash what my mother called "the bits that matter", and I inspect my clothes for any smells before I put them on. No-one has complained of me being dirty or smelly. I have an ultra sensitive nose and would notice this myself.
I do not think all this washing is needed.