Add infinite scroll in shopify

I'm looking for an experienced Shopify developer to fix some functionality errors on my website, https://shopsolidroot.com/.

Key Issues to Address:
- Product Filtering/Search:
- Adding new filter options
- Fixing existing filter issues
- Improving search relevance

- Navigation/Menu Links: Fix any errors affecting site navigation.

Ideal Skills and Experience:
- Proven experience with Shopify
- Strong problem-solving skills
- Familiarity with product filtering and site navigation

Please provide a portfolio showcasing similar work.