So... you could do a lot with this website, but it really depends on how much time you want to spend on it. Here is a "university" which is just an education center website from webflow that I like. You can see that they have wider content area and a full page layout for their content: https://university.webflow.com/courses

If you don't want to go THAT far, and just make some basic changes, that makes sense. The limit here is content width. Ideally you'd have it a bit wider and just have previews of the videos without clicking into dropdowns. This means probably having shorter descriptions though. 

OR, you could keep the existing format, but bring them out of those dropdowns and just let users scroll them. But it may get tricky with the multi-part videos. 

Ultimately this is not a bad layout already. It's easy to see all the titles before clicking into them so that's a plus. Bringing everything out may be longer to scroll. It would work best in 2 col layout I think and limited description field. 

Let me know what you think. How big of a change do you want to make if any at all. 

For this type of website I think the content itself makes the most difference. Just having that in multiple language would be killer already. I don't know if minor design changes are going to make it that much better. You'd need a substantial facelift for maximum impact.