Your struggling is quite close to me.
So I'd like to add my few thoughts looking back on my some recent experience.
I was working in Flash and Animate CC for years. I even was Animate CC beta tester.
After seeing/experiencing constant lags, bugs and no progress in solving that I have decided to replace that software at all.
I'm very happy that I have found GSAP, this great forum, its people and spent some really short time (week or two) for learning basic GSAP code.
I don't need any html animation GUI software.
I don't depend on Adobe updates, subscription.
I don't have to scroll that timeline all the time, see those lags etc.
I don't have to see all that extremely overloaded code. Now my code is short, clean and I love that order.
I just fill total power and freedom with GSAP and my membership investment was covered within few days.
What I'm trying to say is in fact you can avoid using Animate CC at all !!!
Just install some coding IDE and take few weeks for learning basic html, css and gsap syntax.
Make very simple animations. All possible questions are already answered here on forum or covered in docs section.
Very soon you will be happy to see your improvements in animation and coding overall.