If you want to try to make your own, here's a good starting point
https://www.growweedeasy.com/organic-super-soil
If you want a hot mix to add to soil, I've used "Nature's Living Soil". Try not to mix your soil too "hot", it's hard to correct after your growing. Also remember you need to only use products that is safe for your soil biome, that includes your pH down and everything. It would be a shame to go to the effort of building your soil only to kill off the microbes accidently.