You can see a cluster of them to the bottom left and individuals spread around. We have them on raised beds near a maple tree in the yard because we were worried about the Kansas heat drying them faster then we could water. They get watered daily, they’re not injured or weird looking, but they just aren’t growing at all. What do we do?
Not pictured here is a Rosemary patch that’s doing exactly the same, tiny little two leaf sprouts that refuse to grow further or die off.
You don’t grow tomatoes like this. Sorry to be blunt. I can help you do it properly next year if you like.
I think the main issue is the roots aren’t “getting away” because the substrate is too coarse, but it’s hard to tell from a single picture. Get yourself a soil sieve and you can try making your own seed compost, assuming you don’t want to buy it.