We can’t control where gmail will put emails received, this happening based on google algorithm and changing all the time.

Solution 1: Ask your contacts to add your From email address to their Gmail Contacts

Solution 2: Ask your contacts to move your emails to the Primary tab

Solution 3: Avoid using promotional-sounding language in email content

More info here:

https://help.brevo.com/hc/en-us/articles/360018460340-Why-do-emails-get-delivered-to-Gmail-s-Promotions-tab