To remove add to cart button in WooCommerce, just follow these steps.
You can use Code Snippets Plugin, OR simple insert to Appearance > Editor > functions.php
In this post
Remove add to cart button in WooCommerce Single Product Page
1. Install and Activate Code Snippets Plugin
2. Add New Snippet
3. Paste the code
https://gist.github.com/aa8e8d809c6c80b67bcbb6fb8f27e6a7
4. Save Changes and Activate
Remove Add to Cart Button WooCommerce Shop Page
1. Install and Activate Code Snippets Plugin
2. Add New Snippet
3. Paste the code
https://gist.github.com/tuanbbhero/4ceaa8118b8da39491b109107c193dd2
https://gist.github.com/4ceaa8118b8da39491b109107c193dd2
https://gist.github.com/tuanbbhero/4ceaa8118b8da39491b109107c193dd2
4. Save Changes and Activate
Remove Add to Cart Button WooCommerce Archive Pages
Use the same code as WooCommerce Shop Page