L4D2- ./srcds.sh: No such file or directory

[MoistGaming]

i don't understand whats going on.
for the scrds.sh file, i put it in common/left 4 dead 2
for srcds-cli.bundle, i put it in common/left 4 dead 2/platform

in terminal, i did cd /Users/me/Library/Application\ Support/Steam/steamapps/common/Left\ 4\ Dead\ 2/
then i did ./srcds.sh -game l4d2 +map c5m5_bridge -maxplayers 8 +log on

then it came back as -bash: ./srcds.sh: No such file or directory

then i tried ./srcds_run. but that also didn't work.

i don't understand why its not working

Device: Mac Mini (Mid 2011)
OS: MacOS High Sierra version 10.13.6 (17G14031)