They spam the store with orders, what are the solutions?

Question

Fight against spam

Orders go to the store, through the "Buy in 1 click" form and the full form they leave orders, with real phones and email. Rarely, but aptly.
How to fight, tell me the options, plz, if it is not on the list.
- remove "1 click" from the card ( minus conversion )
- set captcha/question-answer ( minus conversion )
- change fields (not checked)
- hidden forms for bots (not checked)
-

Answer 1

Captcha in the furnace, check for not a bot through js, do a captcha is generally evil.