These are some sites I know that'll help you with most of your projects:

1. If you want to make your powerpoint presentation fun and cool. There's a site called "powtoon" that'll help you with that.

2. When it comes to comics, bitstrips.com is the best for that.

3. Another alternative for movie maker is a computer software called Filmora. It contains cool texts and other edits for video presentations

4. If you want to edit pictures on your phones, I would suggest using Picsart. It's super easy and contains a lot of editing stuffs.

(Comment down if you know any useful apps or sites that weren't mentioned above.)