guys, i've seen some god of desctruction fighting each other (on instagram xD) but it's not shown in anime. where can i find that match?

i hate that vegeta cant shine in this tournament. maybe not yet but i like to see him at least a threat

dunno which episode, probably 20 episodes before the current episode
In anime
-Lord Zeno instructed all god of destructions to test the durability of the universe tournament stage, hence they are fighting each other. The event happened after Goku suggested to Lord Zeno to held the Universal Tournament between the 12 Universes

Inmanga
-Lord Zeno simply instructed all god of destructions fighting each other to kill his boring time. The difference between the anime counterpart is, they fight hardly as if their life depends on it. Some also resolve to trickery and cheat technique. Lord Zeno bored with the fight since the god of destructions power to imba but Goku interrupted and suggested that "why not having a tournament that participated by the respective universe's strongest fighters instead of among god of destruction?". Lord Zeno agreed and hence the Universal Tournament will be held.
In anime, the battle between god of destructions happened after Goku suggested the tournament between universe. In manga, it happened before Goku suggested the said tournament.
Nope, it happened also in anime