change back to top button position in center bottom

Hi there,

i want to position it bottom center

This can be done with CSS:
https://docs.generatepress.com/article/back-to-top-button/#moving-the-button

You can do left: 50%;

also want to change it with image arrow like this image

This would require the filter:
https://docs.generatepress.com/article/generate_svg_icon_element/

I would recommend creating an SVG version of the arrow you want.

The default back to top icon would be arrow-up.