Possible to make a custom cancel button?

Old threads show ways to make a formula/url or rich text that emulates the cancel button, but it involves using javascript. Is there any current way to make a custom cancel button?

My use case involves needing it for mobile. I have a custom save button that does more than just save, and so I want a custom cancel button next to it (I currently have a big warning telling the user not to use the native buttons below, since I cant get rid of them).

I tried just making a button to navigate away from the page - the problem is it autosaves no matter what. I want it to NOT save. I believe the advanced option to save when navigating away from the page, does not have any effect on mobile, so I cant simply uncheck it.