Help! I'm stuck at Hoppy Hopper Extreme (JS/Computer Programming)

https://www.khanacademy.org/computing/computer-programming/programming-games-visualizations/side-scroller/pp/project-hoppy-beaver-extreme

I do admit, I'm not in school anymore so I just used to copy from other YouTube videos who've already mastered the projects, ..and now I find myself STUCK.

I've honestly considered signing up for Khamingo OR just reviewing EVERYTHING from the beginning, it's just that time + forgetting-cycle wise I have an ill feeling I'll never make it. While to describe myself I was NEVER close to any STEM-related material, it's more like I had so many troubles that I had hard time even staying in school from the get-go. That is embarrassing to admit. = I'm in my 30's who can't even catch up to what elementary kids can do with coding these days. Boo hoo.

But if anyone could give a reasonable hints to what the projects requires... For example:

https://www.youtube.com/watch?v=y74qUdQfsLM

Here's a link to one of the people trying to help out with the project, where obviously she did not finish it unlike this person here ➡️ https://www.youtube.com/@darknightcerb. And he is the one I used to copy from, just to admit again ...

That being said, I was wondering if you could offer any other approaches than me having to sign up for the AI/just redoing things from the beginning

Please help. Khanacademy is like the only venue for me to take care of some of the most important worldly-practical skills I've totally missed out in schools like math, so I intentionally make time to brush up on that on a regular basis.

Prompt answers would be highly appreciated. Thank you!