Nose down might work, but it may not work for everyone! My saddle is level, and that’s the preferred saddle position of many cyclists I know. Most who angle it, do angle it down at just a few degrees. When you angle it down too much you will start sliding forwards and you will shift too much weight on your arms and shoulders. When you angle it too far backwards your parts get squished for certain, and you can get back problems.if you find yourself repositioning very often in the saddle the angle may not be right for you.
If your anatomy gives you problems with weight on the perineum and blood circulation to your penis, you could also consider a saddle with cutout, such as the model below which I use. Wit this I get no pressure on the perenium and the s curve makes it very easy to “rotate” towards a more agressive riding position.
Proper cycling shorts or tights with proper anatomically fitting padding are also super important. They lift your balls so that you don’t sit on them. And they should hug you gently like a second skin so that you don’t get any chaffing on your long rides. I am quite hung and I actually point my penis up in my cycling gear. That way it never gets squished and stays comfortably out of the way of any movement and rubbing. Many cyclists actually do this. Please note that cycling gear is not the same as normal Lycra or spandex shorts. They are often called cycling shorts but they are not. Proper cycling shorts or tights have bibs that go around the shoulders to ensure that the groin area gets nicely hugged between your legs, and they have a padding insert.
Then also saddle width is crucial. when the saddle is too narrow for your sit bones you will also add to much weight on the perinium. She too wide you will slide around and loose energy,
And the geometry of your bike and bike fitting plays a role too with saddle choice and angles. Is it an aggressive forward ride or more straight up?
A proper fitting of saddle is very personal and what works for one person may not work for the other. A good bicycle shop can help you with bike and saddle fitting. But there are also websites which can give directions on how to do it properly.