If you know a part how to solve, than we can see and share the solution here.

1. Addressables that has bundles to load from shared projects, Levels and Resources? (add sample)

2. Highscores and User-settings Save Game is optional, sample that shows free use?

3, Video in itch projects, film/movie - describe how to upload the sample gameplay?

All this to load faster, improve for creating videogames in Unity to play in webgl.