Custom WordPress Theme Fix & Extend

We need a WordPress developer to fix and extend a custom theme built by a freelancer who disappeared. This is not a rebuild or page builder migration. The site has 40 pages, mostly templates, including home, service pages, blog, and product pages. The current setup uses PHP 8.1, ACF Pro, and WooCommerce for a small shop. The repository is on GitHub, but the previous developer did not leave a README. Please share examples of work in custom themes written by others.