Saddle angle is a funny one. Too far nose up likely puts tons of pressure on sensitive bits that you shouldn’t sit on. It can also hold the pelvis rotated rearwards, which can strain the lower back. Too far nose down and the rider will slide or rotate forward, may still sit on sensitive bits, and will weight their hands a bunch pushing back. That will also cause too much neck and shoulder strain. But it’s funny because saddles have curves and flip up at the back… so what angle is level?
Here’s my setup steps. Start with the saddle level - literally a clipboard with a level on it. Ride over some bumps while pedaling. If you find yourself shuffling forward - move the saddle forward. If you find yourself shuffling back, move it back. Rinse and repeat until you find a stable position. Then adjust the angle slightly to help distribute pressure on the saddle and eliminate hot spots. If you change the angle more than 1-2 deg, repeat step one. Once you’ve done all this, if you can’t get comfy or your legs are chaffing on the saddle or you have hot spots or the saddle is 3+ deg unlevel by any measure - the saddle probably doesn’t fit.
Saddles are like shoes or helmets. They all come in diff sizes and shapes, and everyone needs their own choice. Even diff saddles from one brand are diff enough to matter.
Feel free to PM me with specific issues if you want suggestions. And come by for a bike fit if you end up in San Diego