I can't reveal my store unfortunately for private reasons but I am using the Showcase Theme (Luna specifically) and by default, the collections list is displayed on mobile by only one column. I was looking to change this to display 2 products.
Additionally I would like to add a slider section and was watching this video: https://www.youtube.com/watch?v=7DqtFl2KaSg&ab_channel=CodingwithJan-ShopifyDeveloper and was slightly confused as to whether the slider I would make would maintain the aspect ratio that the current Showcase theme uses or if it would change. The developer in the above link uses slick as a reference and I think I would be okay to apply this but have trouble understanding the aspect ratio.
If this is all very difficult, how much would outsourcing a developer be? (estimated)