Hide Quantity Selector

Hi!

I am trying to achieve something similar to these product pages:
https://nustrips.com/products/energy-in-a-strip
https://happymammoth.com/products/the-new-ultra-potent-hormone-harmony

The idea is to
1 . hide quantity selector
2. offer dynamic discount and display discount in a swatch style like with a tooltip on the top.
3. offer and option to choose between one time and subscription.

I know it might not be within theme’s scope but can you guide me in the right direction by letting me know if any of this can be achieved with this theme?

Thank you.