How to add two button on slideshow in debut the

[Izrignal]

I read a lot of topics I tried a lot of things but none of them turned out what I wanted I put a picture of how I want to do it I will be very grateful some help me. 

Now my thems is supply but i rework debut theme and i want only in mobile version have a 2 buttons on slideshow. like this image:

now my theme is supply if u want code or somethig else please write me mail Izrignal666@gmail.com

this is my shoP : https://bullbg.com/