Makeup help

Autumn

Okay so I have super oily skin, I’m also 18 if that helps but anyways. No matter what foundation I’ve used, and I’ve tried like probably 10 different kinds, it always looks good the first couple times I use it and then the more I use it it just separates on my face as soon as I put it on. It never looks smooth or even, and when I look at my face really close it’s just gross and I want my makeup too look good and not feel embarrassed when people look at me, because all I’m thinking about is that they’re looking at my terrible makeup. I’ve use the elf poreless putty primer and the no pore problem primer, and I use skindinavia setting spray so I honestly don’t know. And it’s not even that it’s bad at the end of the day because it looks the same as when I first put it on and I have no idea what else to do.