MX / SPF / DKIM configuration for Google Domains

MX / SPF / DKIM configuration for Google Domains


Hello everyone,

At this point, I accept really any help. I am trying for two weeks to connect Zoho Mail with 
my Google Domain (carneiro.dev). For now, I gave up of SPF and DKIM and I am solely trying 
solely to have MX verified. That is how my DNS looks like:

Synthetic records deleted and only MX record added

Still seems to not be enough to be verified by Zoho. 
Can anyone give me a light of how to configure MX / SPF / DKIM within Google Domains? 

Thanks everyone,
Luiz