Here is a modified version of the source theme with a “categories” page, displaying all the tags in one place. The idea is taken from liebling theme.
Simply download the zip file, and upload it as your theme. Then create a page named “categories” and publish.
here is the final result Categories
And here is the ZIP file https://github.com/drshounak/Source--ghost-smartgoat/archive/refs/heads/main.zip