A shower is a relatively simple routine that usually doesn't require 10 steps or a plethora of products. A daily shower with lukewarm water and a fragrance-free hypoallergenic cleanser followed by hydrating lotion or oil afterward will do the trick.
Korean skincare has become synonymous with hydration, particularly exemplified by Skin1004’s SPF 50 product, which promises to keep skin dewy without being greasy, making it a stellar one-step skincare routine.
For oily and spotty skin, I frequently recommend CeraVe's SA Smoothing Cleanser with salicylic acid since the beta hydroxy acids cut through oiliness without leaving skin parched.
"Oil-free moisturisers are typically less greasy in formulation than other moisturisers and as such, can help to reduce flare-ups of acne and improve the appearance of enlarged pores."
The fact of the matter is that clients first come to me using way too many products in their routine. I love to pare it back when first working with someone on clearing their skin to cleanse, treat, and hydrate.