Are some templates unable to feature "cart" icons on e commerce sites?

I am wondering if there is no way to have a "cart icon on my e commerce site that is the Forte template. I have a shop and am realizing that no cart icon has ever appeared and there is no option for one on the "site style" section which every post/video explains that to be. Will I need to completely redo my site with a new template just to have a cart icon? I don't believe there is a way to change templates without completely redoing the site, is that correct? Or is there a way to change templates without having to reupload everything on the site?

Thank you for the help!