Can't get Proxy to work on iPhone

I’m having trouble getting my iPhone to connect to the proxy. I set the port to 5555, clicked on capture requests, entered my MacBooks IP address and the 5555 port under ‘Configure Proxy’ on my iPhone that’s on the same wifi Network and once I do that it changes the wifi status to “No Internet Connection” and wont connect. I found the certificate under Application Support, installed and set the permissions and then air dropped it to my iPhone and installed it there too, and no luck. Could it be my router? I have the Xfinity Gateway and tried Port Forwarding, turned off all firewalls, and now out of ideas.