If you're on a 64-bit system, try switching to a 64bit version in Steam as that's the latest macOS build.
In case it still crashes, can you please check for crash dumps in your Toribash folder and upload the latest one here so we could investigate it further?
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Dyld Error Message:
Symbol not found: _clock_gettime
Referenced from: /Applications/Toribash/Toribash.app/Contents/MacOS/Toribash
Expected in: /usr/lib/libSystem.B.dylib
2020-03-28 18:52:57.377 Toribash[955:23376] 18:52:57.376 WARNING: 140: This application, or a library it uses, is using the deprecated Carbon Component Manager for hosting Audio Units. Support for this will be removed in a future release. Also, this makes the host incompatible with version 3 audio units. Please transition to the API's in AudioComponent.h.