Hello @iHavPet
Welcome to Shopify Community.
Did you checked the theme customizations option ? is the option not available to add the newsletter form in footer ?
if it is not available then it need be coded in order to add in footer.
Thanks
Hello i cant add it, so yeah i need the code for it
If you are not familiar with code then rather the theme can break I would recommend you to hire a developer at a reasonable cost to setup this for you.
Let me know if you need.