Hello.
The best way is to implement recaptcha v.3 in invisible mode because some people use for exemple "365.shop" like the company name (or lastname or firstname) and the 1.6.1.24 do not allow this name 365.shop.
I already implemented recaptcha v.3 on the 1.6.1.23 and 1.6.1.24 and it is working very well.
It is also invisible for the client (no more boring pictures and clicks for the client)
It is working also very well for the contact_form.
Best regards