Not makeup, but more skincare: it was finding the right sunscreen that didn't pill when I applied my foundation and that took me awhile. I found a lot of the sunscreens in my drugstores to be trash. The one that works well for my skin and makeup is COSRX. Same thing for mascara especially western mascara are terrible. I tried on so many and they keep uncurling my lashes which is so, so frustrating. So I will only use canmake or kissme mascaras.
If you feel overwhelmed, the one and done type of look is always cute and easy. You just need two eyeshadows: base and topper. I don't know if you ever tried the Urban Decay 24/7 moon dust eyeshadow singles, those are really nice and glittery. I will just pop on a brown eyeshadow and then a topper, mascara, light foundation and some lip gloss. It's my travel/grocery shopping look, haha.
Moira has some good glitters and it looks like they're having a sale.
As for the dewy skin looks; you can create the effect with a beauty blender/sponge dupe + liquid foundation. There's also bronzing drops, glowy skin tints or just using a highlighter. It'd be dependent on your skin type too. I personally avoid those because I have oily skin, so you're gonna hafta research those more.