This is the latest log I got from TLauncher.

My game crashes instantly after launching it.

Here's a Fabric error log:
Uncaught exception in thread "main"
java.lang.RuntimeException: Could not create directory C:\Users\mksta\AppData\Roaming.minecraft\iris-reserved\1.21.4
at net.fabricmc.loader.impl.discovery.DirectoryModCandidateFinder.findCandidates(DirectoryModCandidateFinder.java:48)
at net.fabricmc.loader.impl.discovery.ModDiscoverer.discoverMods(ModDiscoverer.java:111)
at net.fabricmc.loader.impl.FabricLoaderImpl.setup(FabricLoaderImpl.java:216)
at net.fabricmc.loader.impl.FabricLoaderImpl.load(FabricLoaderImpl.java:193)
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:146)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: java.nio.file.NoSuchFileException: C:\Users\mksta\AppData\Roaming.minecraft\iris-reserved\1.21.4
at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85)
at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
at java.base/sun.nio.fs.WindowsFileSystemProvider.createDirectory(WindowsFileSystemProvider.java:527)
at java.base/java.nio.file.Files.createDirectory(Files.java:699)
at net.fabricmc.loader.impl.discovery.DirectoryModCandidateFinder.findCandidates(DirectoryModCandidateFinder.java:45)
... 6 more

That's basically it.

Never mind it worked I had to install it manually from Modrinth