Withered up

I use the moist paper towel in a bag trick until I see a tip pointing out, even a small one will do. Then I just barely make the seed penetrate the surface of the soil, root side down, then half cover over the seed. Make sure you can still see the seed at all times. I don't use seed domes and see atleast a 90% germinate and veg (estimated). You'll want to use a light sprayer on the surface whenever it looks a little dry. Only drench the soil and the seed once, after that just mist to keep even the top soil from drying. Once it stands up a bit, you can stop misting and only water it if the soil seems to be drying. It sounds like yours may have been overwatered and drowned, if they turn discolored and fell limp. I wish you better luck

I like using rockwool. You can put in in hydro or soil. I've had 100% germination in rockwool.

Don't keep them saturated with water and sprinkle a little cinnamon around them and water in. This will stop them from damping off