Why am I getting these errors?

[CHJ85]

java -jar sa2dx_v0.21.jar
[LWJGL] Failed to load a library. Possible solutions:
a) Add the directory that contains the shared library to -Djava.library.path or -Dorg.lwjgl.librarypath.
b) Add the JAR that contains the shared library to the classpath.
[LWJGL] Enable debug mode with -Dorg.lwjgl.util.Debug=true for better diagnostics.
[LWJGL] Enable the SharedLibraryLoader debug mode with -Dorg.lwjgl.util.DebugLoader=true for better diagnostics.
Exception in thread "main" java.lang.UnsatisfiedLinkError: Failed to locate library: liblwjgl.so
at org.lwjgl.system.Library.loadSystem(Library.java:162)
at org.lwjgl.system.Library.loadSystem(Library.java:62)
at org.lwjgl.system.Library.(Library.java:50)
at org.lwjgl.system.MemoryUtil.(MemoryUtil.java:97)
at org.lwjgl.system.Pointer$Default.(Pointer.java:67)
at org.lwjgl.system.Callback.(Callback.java:41)
at main.Window.init(Window.java:74)
at main.Window.run(Window.java:61)
at main.Loader.main(Loader.java:256)

[Mythical-Atlas]

I'm amazed that anyone is looking at this repo 😂. I've actually been working on a C# version to get away from these weird issues with Java. Do you have the LWJGL jar file in the same directory as the game jar?

[CHJ85]

Oh. No I just downloaded and ran the release file. Maybe I should try downloading the source code instead.