If you have an even skintone/no hyperpigmentation, don't have blemishes or dark circles to conceal or correct, don't have large pores, et al, you honestly don't need to use anything in regards to foundation or concealer. Just focus on colours (eyeshadow, blush, lips).
On a different note: Your saying you want to "look better than makeup girls that try to disguise their flaws" reeks of snobbery, to me. It implies you believe I and other people (women and girls aren't the only ones who wear makeup), who have things we want to detract from and opt to wear makeup, are ugly by comparison. Not cool.