The truth is most content creators are in the same boat as you in their own genre. I'm a gamer, one of the most saturated genres out there. So saturated it has a website almost entirely dedicated to it (Twitch). But one must find a way to stand out among so many. I can't give much advice in the beauty genre as I have no experience with that. My wife doesn't even use makeup if you can believe it. But I can give you some examples of gaming channels that are successful and how they each stand out from one another.
The most famous of them all is Dr. Disrespect. A guy (which also happens to be his name, Guy) who's basically an 80s, superstar, chatterbox who you will either love his annoying, supercharged, over-the-top character or you will hate his guts. Either way, he is the true meaning of entertainment in the content creator world. His style is basically a made-up character, acting.
WackyJacky101 is not just one of the best PUBg players out there, he also mastered the art of How-To videos for this specific game. His how-to videos combined with detailed game mechanic explanations, gameplay analysis, and all-around fun custom games with his audience make his channel one of the best sources to learn to play PUBg. His style is education and fun.
And then there's Markiplier and Jacksepticeye. To of the craziest gamers out there. These guys will try just about any game and they will make you laugh till you pee on yourself as they play them and freak out over their storylines and goals. It's not just about the games, it's also how they will make you want to watch them more because they make the games even more fun. Comedy is their style.
They each have their own ways of standing out in the same gaming genre and they do it well. Granted, they have been at it for years and they started at a time where YouTube worked very differently from today but they can still play in today's YouTube without missing a beat.
You have to find your own style, your own way to stand out. Something about you that can become your brand. It has to be as close to you as it can be so it can be easy for you to mold into your channel.