I have ubuntu on my macbook 2007 with a spanish keyboard, on macos the @-sign was typed using alt (option) + 2, but on ubuntu i have no idea. I have to copy and paste it every time. How do i type a

I'm from peru and my keyboard is spanish. I have tried using alt+64, ctrl+alt+2, ctrl+alt+q, but nothing happens. I try to do a @ but each times a press on alt + 2 or ctrl + alt + 2 to get it, the top menu of the app/windows show off (file/edit/view/tool) if a try with a english canadian's layout or a english. Buen dia, hay un correo que no me llega de peru_infognb(arroba)bancognb. com, dicen que me lo enviaron el dia 20 de junio a las 10. 30am ( hora de perú). El resto de correos de otros remitentes no.

El resto de correos de otros remitentes no.