problem connecting to cctv from my local wifi network

hi I have almost no knowledge of microtic
the problem is that I open a port under the firewall nat 37777 port from the external network mobile device with cctv cameras connect seamlessly. But I can’t connect to the local wifi, how am I supposed to make a rule for this?

sorry if there are errors in translation i translated with google translate

Do you use a domain/hostname in your mobile CCTV application to access your CCTV remotely?

Sounds like you need hairpin NAT. Youtube has some excellent videos on how to do it (mine being one of them).