My password doesn't want to change.

I forgot my password so i've been logging in by gmail automatically. BUT I want to reset my password but it doesn't work for me. I press forgot password, then it loads into my account settings but it doesn't allow me to reset or change my password. Can you please help me change my password to something else.I forgot my password so i've been logging in by gmail automatically. BUT I want to reset my password but it doesn't work for me. I press forgot password, then it loads into my account settings but it doesn't allow me to reset or change my password.

Can you please help me change my password to something else.