Move em closer for one, add some vermiculite if you starting over.. Re pot with different soil not familiar with that soil, looks hot for seedlings. Those will recover tho don't give up on them, they won't on you
First off, no need to start over. They aren't that bad. I am with others in guessing that your soil is the culprit. I have no problems with MG Seed Starter with some extra perlite for small plants. I don't use any other MG but that stuff is everywhere amnd works great for me. I would also start off in keg cups (with holes at the bottom) to get a good healthy plant/root system started.