Moodle in English

This isn't really a development question, as you don't seem to be writing any code to handle this (apologies if I've misunderstood here - please include a link to your code if I've got this wrong).

However, to give you a couple of pointers.

Teachers are (usually) assigned at the "course" level - so giving that role a "create course" permission, would only work for allowing them to create a new course within an existing course (which is something that Moodle doesn't allow). You need to give your teachers a "course creator" role (or similar) at a course category level, to enable them to create courses within that category.

Zoom and BBB plugins are both available to add to your Moodle site, just search here: https://moodle.org/plugins

Instructions for installing plugins: https://docs.moodle.org/en/Installing_plugins