The important question, Why this requirements to any webmaster that using the GB theme don’t find this in the ready options in the customizer or order by drag and drop option instead of using custom code for every thing ?!
Drag and drop functionality is normally a page builder plugin specialty. And while having page builder plugin is helpful and all, it has a drawback which is, it can slow down a site with its bloat.
That said, some users don’t want the bloat. Plus, they find Gutenberg Editor plus a few PHP snippets enough as it is fast/lightweight.
Also, WordPress doesn’t add it by default, and we follow WordPress’ standards so it is decided to leave the decision to add page builders or any functionality to the users.
I want both on the left side
I’m not sure I understand what you mean by this.
Can you specify which ones are supposed to be placed on the left side? You can provide images to explain what you mean. Thank you.:)