Why didnt Goku go Super Sayajin+Kaioken to defeat Cellsius and

Why didn't Goku use Kaioken against Broly?

If Goku was able to use Kaioken x1000-1,000,000 at base form or even at a Super Saiyan form, would he gain the sufficient energy/power required to destroy the entire Multiverse in seconds?

Why didn't Goku ever use Kaioken with Super Saiyan 2, 3, 4, or SSG? - Quora

The terrifying power of the Legendary Super Saiyan!! - Chapter 9, Page 184 - DBMultiverse

If Goku was able to go Kaio-ken while Super Saiyan Blue, can he go Kaio-ken with his other Super Saiyan forms? - Quora

What's Your Dragon Ball Hot Take? : r/dragonball

Goku can tolerate the temperature of lava? - Goku - Comic Vine

Why didn't Goku use Kaioken against Broly?

The alliance of the greatest fighters - Chapter 81, Page 1867 - DBMultiverse

Why did Goku never combine Kaioken with regular Super Saiyan? - Quora