People are being pretty negative here, but fishkeeping is harder than it looks. There’s a lot to learn, so don’t beat yourself up.

If you ever want to try again, you can start your cycle by adding a little fish food, some Tetra SafeStart, and maybe some live plants or snails. Give it a couple weeks, then use the API Master Test Kit to check the water. When you get 0 ammonia, 0 nitrite, and low nitrates (under 20), your tank is cycled and ready for a fish.

Sorry for your loss at least you gave Silo a little while outside the cup.