I added moonlight lib and supplementaries into my game the game crashed giving me a crash report The game crashed whilst initializing game Error: java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'supplementaries'! Exit Code: -1. I'm using fabric-api-0.56.1+1.19.jar
moonlight-1.19-2.0.14.jar
supplementaries-1.19-2.0.12.jar

i got it to work but now the mod hasn't loaded into my game whatsoever although it says it should be working

How do you know the mod has loaded? Does it show up in the mod menu?

I can't help you without a crash report

it shows up in the mod menu but not in game, it doesn't crash but how could I get a crash report

it shows up in the mod menu but not in game, it doesn't crash but how could I get a crash report

Open File Explorer and select the Address Bar, type %appdata% (or you can press WindowsKey+R and type %appdata% there), and hit enter. Find the folder labeled .minecraft and open it. There should be a folder called crash-reports grab the most recent one and attach it to your comment.

You might want to open the logs folder (also located in your .minecraft folder) and include the latest.log file located there, since you were able to launch the game this might be useful.

So how do you verify that it does not show up in game? Can you type /supplementaries roll?

where should I type it? and

crash-2022-06-19_19.08.39-client.txt
now I am using the newest version for 1.19 and it doesn't show at all

where should I type it?

Load into a single player world and open chat to type the command.

crash-2022-06-19_19.08.39-client.txt now I am using the newest version for 1.19 and it doesn't show at all

That crash log looks like it's from a couple of months ago, are you sure it's the most recent one?
With regards to using the newest version for 1.19 I take it you are talking about 1.19.2 correct? If so did you make sure to update to the 1.19.2 version of supplementaries? If you are still using fabric that would be this one here https://www.curseforge.com/minecraft/mc-mods/supplementaries/files/3929553

There is a 1.19 version and a separate 1.19.1-1.19.2 (The latest version of moonlight lib works for 1.19-1.19.2

Asked to type a command because it's a quick way to see if the mod is on. I have never heard of mods showing up in mod menu but not being on so I don't know

okay I've gotten it to work but the mod doesn't show up in the item menu is that supposed to happen or is there a way to change that if you know?

Not all mods have a dedicated creative tab. Looking at those to see if a mod is installed is not the way to do it, that's why I asked to type the command. This one however has an optional tab, it's enabled with the condigs