Sure, Goku does die in the manga. It happens on multiple occasions, each time adding depth to the story and his journey as a character.
Yes, Goku dies a few times throughout the manga.
Goku sacrifices himself to save the Earth from powerful enemies on multiple occasions in the manga.
Yes, Goku does die at certain points in the Dragon Ball Super manga, but he often finds a way to come back.
Yes, Goku does have the ability to heal in the manga in certain situations.
I'm not sure. You might have to read the manga yourself to find out for sure.
No, Goku typically remains stronger than Vegeta in the manga. Their power levels keep fluctuating, but Goku often has the edge.
In the manga, Goku does fall into hell as part of a complex and adventurous storyline. This event leads to many interesting developments and challenges for him.
Yes, Goku manages to defeat Jiren in the manga after an intense battle and showing great determination and growth in his powers.
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 does meet Bardock in the manga.