DNS records and NS set for sendinblue

I am trying for about 8 days to set up a sender ( domain from godaddy and IP from sendinblue ). Sendinblue claim that NS has to be sendinblue but, on godaddy, I can t set DNS records ( txt, dkim, spf ) without their nameservers... https://prnt.sc/mc7bvr

how to proceed??

 

sndb