Does Goku fall into hell in the manga?

I'm not sure. You'd have to read the manga to find out for sure.

Yes, Goku did fall off Snake Way in the manga.

Yes, Goku does have the ability to heal in the manga in certain situations.

Yes, Goku dies a few times throughout the manga.

"We Said We Would Make a Crappy Game, Why the Hell Did the Titans Fall?" was a game/game system novel, written by Ibuprofen Warrior. The story was about the male protagonist Gu Sheng and the female protagonist Shen Miao Miao creating a game together in a parallel world. Gu Sheng had the "Game Treasury System" while Shen Miao Miao had the "Investment Rebate System". They worked together at the same game company and achieved their goals by making games. This novel depicted the game's production process in a humorous and funny way, bringing joy and novelty to the readers. As for the specific content of the Titan Fall, he needed to read the relevant chapters in the book to get the answer.

Goku sacrifices himself to save the Earth from powerful enemies on multiple occasions in the manga.

Yes, Goku does meet Bardock in the manga.

Yes, Goku does use Kaioken in the manga. It's one of his signature techniques to boost his power.

No, Goku typically remains stronger than Vegeta in the manga. Goku achieves higher levels of power and unlocks more potent forms.

Yes, Goku manages to defeat Jiren in the manga after an intense battle and showing great determination and growth in his powers.