If the cost is a barrier, consider these open-source and free firewall tools for Mac:
Files labeled as "cracks" or "activators" often contain hidden malware that can steal your personal data or passwords. Little-Snitch-5-5-0-Crack---License-Key-Free-Download-2023
You can download the official Little Snitch version and run it in demo mode. It provides the same protection as the full version but resets every three hours. If the cost is a barrier, consider these