Hello! And welcome to the site. I'm sorry to see that your first impression is so negative, but some of us are here to help.
It's nice to meet you.
Just how big are you? There's big, and there's huge. We've actually discussed both, and I would direct you to the forum search for details. But what you'll find can be paraphrased like this...
Do you have a preferred style? Briefs, boxers, boxerbriefs, jock straps, etc are all possible options.
But, regardless of the specific style, different brands have different sized pouches. If you're just normal big, the Target store brand is made by 2xist, is called Evolve, and is really quite good. If you're humongous, you'll have to move into the expensive brands like Andrew Christian, and then there are even some sites that make custom underwear.
One secret is to look for materials with a percentage of lycra in the blend. The extra stretch *and* recovery allows it to form to our needs more comfortably than other blends.