A great place to start would be the care sheet.
Ditch the soil and crickets. Soil can cause many problems and garter snakes don't eat crickets.
You've got the right idea with the worms and the care sheet will be a big help.
It takes time for a new snake to settle in so not eating is rather normal especially for a wild caught snake.
Posting a photo will help get your snake identified and will also give a better look at the ideal foods for it.
You did the right thing by posting a separate thread. In someone else's thread your request might get lost.
Garter Snake Care Sheet - Caresheets