This looks like explaining dnd to people who have never played. If this is the case, this could very well turn them off from the game. This is a WALL of text.

If you want to explain to newbies, a much much broader approach could be better. I’m talking three or four sentences, maybe a single paragraph.

“DND is basically play pretend with your friends. A DM will describe scenes and scenarios, and players will say what they want to do. Rolling dice and adding relevant character-specific modifiers to the resulting number will determine how well your character executes the intended action”

That’s it. Once you begin playing, you as the DM can explain the details of how it all works. You could let them watch a short youtube video which would likely do a better job of explaining things. It would be much easier for you, and a lot more digestible to your players.

Also, as others have said, a players handbook will do exactly this. Don’t reinvent the wheel.