I absolutely swear by setting spray and primer.
This is going to be long so, sorry in advance haha.
For your undertones, I’d suggest looking into Kat Von D Lock It, Tarte Glamazon or possibly even Too Faced Born This Way foundations. They all carry a wide range of lines/colors, but I have found they also have foundations with a more pink undertone to them vs a more yellow found in some other brands. I personally use Tarte’s Glamazon (around $40), which stays on ALL DAY, is full coverage and seems to work well with combo-skin types. Those 3 also tend to have several fairer-skinned options as opposed to just 2-3 standards. I think finding THAT shade is the hardest to match!
I use a foundation + eye shadow primer. Urban Decay has some really good primers. I used to use their UD Original formula, but recently switched to their Anti Aging and really like it. They have good face primers, too– but I use Benefit Cosmetics line of primer now (The Pore-fessional super mattifying gel), and it works wonders. Not sure how old you are or what condition your skin is in, but I feel like it really helps from allowing the foundation to settle into fine lines and small cracks. It also allows you to use LESS actual foundation and have a more natural looking finish. If you’re DIY-ing, invest in a good foundation brush set. There’s a lot on the market right now, but I’ve been using U-Spicy brand (look on Amazon, you get like 12 brushes for $30 or so), and they have several options and are great for blending.
If you’re looking for a really good setting powder, I like IT Cosmetics Confidence in a Compact. I do not like their foundation, but a lot of people swear by it and that is just personal preference. I’ve found a drugstore-brand that is similar and that I use often, which is Neutrogena Skin Clearing powder. I have some acne scars and pigmentation I like to hide, and both IT Cosmetics and this specific line from Neutrogena really do a good job (from a powder perspective) of clearing it up.
I’d stay away from translucents on the day-of, typically because if not blended correctly can/will show up in certain lighting.
If you’re looking for a drugstore brand for foundation that provides the right coverage, you could also look into Loreal Infallible Pro Matte. I’d personally rate it a 6.5 out of 10, but it’s a good pricepoint and if you don’t wear makeup a lot, or don’t wear full coverage a lot, it’s a good product to ease you into the full face look.
Hope that helps!