It's how all the serious stuff in the world are handled.
Courts of law
Open source code
Scientific peer review
Although there's a fair bit of corruption in all if the above platforms, they are consistently better than "I investigated myself and didn't find any evidence" solutions. Mind you, even EY the financial audit giant was caught red handed presenting what their client wanted to say, instead of trying to find the truth. I recommend that you look into this scandal.
guess the court is only supposed to rule in favor of the west,
How so? Palastine is literally an Islam country. Wouldn't it have ruled in favour of Israel, one of US' closest allies and a country no western country has war with if your claim was true?
That practice has lost its credibility.
https://www.youtube.com/watch?v=qwbq9OsHvp4