Grammar:
https://test-english.com/explanation/b2/inversion-negative-adverbials/#:~:text=What%20is%20an%20inversion%20with,verb%20%2B%20subject%20(%2B%20verb).
https://www.hornerschool.com/inversion-negative-adverbials/
Exercices:
https://test-english.com/grammar-points/b2/inversion-negative-adverbials/