Answer 1

for programming languages like Java, Python, ... you need special libraries for GUI so that you can create animations, which are not supported by sololearn. But if you write web (html, css, javascript) codes you can create animations.

simple animation which css:
https://code.sololearn.com/WL1Slb3hrb7K/?ref=app

animation with JavaScript(html canvas):
https://code.sololearn.com/WofGc6ixa2WE/?ref=app