How do I make a modding engine

One of my favorite rhythm games (not made by me) is Charles the bee I want to make a mod engine, but the devs dont trust me with the source code, and the current modding engine is dogwater

Now, I want to either:

1. Find a way to reverse-engineer the exported game into a c3p

2. Find tips on begging

3. If I need to remake the game from scratch (Like the fnf modding engines) how do I make a rhythm game, a chart editor, and how do I load animations from png files (for custom characters)

your profile says u made Charles the bee game?

ur probably right, but the devs have seen that I have posted it and they are ok

your profile says u made Charles the bee game?

That was an unfinished project I made that has all of the ANIMATIONS, not the actual game with the devs permission

What you're asking is not just unethical, it's outright theft. Sharing private messages publicly only makes this worse. If you want to make games, start by respecting other creators.

How do I edit posts so I can take the screenshot out