I found something absolutely absurd(weird).
Thia is how the glitch works,
Firstly, you enter a game and lets say you have 7000 trophies initially. Then you matchup with a opponent. Lets say you are about to lose the game, you can actually quit the game and clear the app data. Then, reenter null’s royale and u will see that the match u were playing is no longer resumed and the trophies u have still remains the same…
Secondly,(continuation of the first one), when you enter another match and lets say you win and the game say that you won 30 trophies and so your trophies increased to 7030 without decreasing any trophies later.
READ THIS: LESS DETAILED BUT MORE SIMPLIFIED.
The glitch is when you join a match and u quit the game and clear the app data , then reenter the game, the match you had does not resume and the trophies you have , remains the same. So u can enter another match and get more trophies without losing and decreasing trophies.