Access Local IP via public ip / port forwarding

RouterOS Beginner Basics
1

Is there any way to do this:
Local camera IP: 192.168.1.210 port 88 > port forwarding 1210 on mikrotik
Local computer IP: 192.168.1.200
Public IP: 91.91.91.91


From Computer with ip 192.168.120 to access local camera on url:

http://91.91.91.91:1210


from outside the network is working fine but from local is not.

2

typo:

From Computer with ip 192.168.1.200 to access local camera on url:

http://91.91.91.91:1210


from outside the network is working fine but from local is not.

3

You need hairpin NAT. The page has detailed explanation what happens and how to fix it.