Use (You can add it as a Scheduler),
/tool fetch url="https://raw.githubusercontent.com/ertugrulturan/Mikrotik-Crowdsec-Free-Adresslist/refs/heads/main/Crowdsec_FreeBlacklist.rsc" ; /import file-name=Crowdsec_FreeBlacklist.rsc
Tested by RouterOS 7.13.5