Copilot won't help in recycling soil, why?

Ì just want to know how to recycle soil, so I could use it again. I know there are some ways in order to improve the quality, such as using mykorrhiza. But I don't know exactly. But copilot refuses to give an answer in that matter. Am I missing something?

https://preview.redd.it/70arksi4i56g1.png?width=1035&format=png&auto=webp&s=72a3183034ee896029ef6756d020ced251d52022