Can I change my e-mail address with google?

Hi. I want to use google ad manager in kodular.
But, I signed up kodular with my univ. google account… So I cant use ad manager ID.

So - I want to change google account in kodular - I tried : my kodular - profile - security - email address - but I cant change my another account (maybe beacuse I signed up with this univ. account)

Can I change my another google account? Just normal account.

Thank you.