Hi,
Robot is not something I’m familiar with but I’ve just done a quick search on our corporate training platform, Udemy. It’s not as obscure as you might think; there’s a good few courses there. You can sign up for free and wait for a flash sale (which are frequent and very cost effective BTW).
In terms of approach, it seems you could simply continue with Robot.
Right at the top of the list in my Udemy search is Robot and Selenium,
Alternatively, if you’re interested in using other tech (e.g. Cucumber or Behave), you may need to be consider strategies to re-use the Robot testing within whatever framework you create.