NAT Mode on WAN

Good Day,
I have a Reyee RG-EG210G-P router, which has 2 LAN networks setup on it and port VLAN is setup of each LAN network on different ports.
192.168.110.0/24 (VLAN1) is on LAN port 0 , 102.20.59.x/29 (public network) on LAN port 1. When i switch NAT mode off under the WAN port of the router, the 102.20.59.x/29 (public network) works and i have internet when connected to that port.
When i connect to LAN port 0, 192.168.110.0/24 (and get DHCP IP) i do not get internet unless i switch on NAT mode on the WAN port.
Is there a way to specify which LAN use NAT via the PPPOE account on the WAN port?
With a Mikrotik you can setup multiple NAT rules but i have not found any on the Reyee routers.
What im trying to achieve is when i connect a device on LAN port 1 (public network), and setup a static IP within that 102.20.59.x/29 network, i am able to browse to" whats my IP address" and it should show the public IP i setup on the device connected to LAN port 1. Which works with NAT mode turned OFF.
But like i said then it breaks the internet for the private IP 192.168.110.0/24 as it needs the NAT Mode switch on.

Hello,

You may need to consider PBR if you want to route traffic in more detail, I can share with you the device model manual:
https://reyee.ruijie.com/en-global/support/documents/slide_ruijie-reyee-rg-eg-series-routers-implementation-cookbook/?page=ReyeeOS+2.300%5B280%5D%5B260%5D+Configuration+Guide-ReyeeOS+2.300%5B280%5D%5B260%5D+Configuration+Guide

You can find the information regarding PBR in section 4.10.2.
If this information is not enough to achieve your goal, please contact us on Rita chat, where we can check your requirement in more detail.
Best regards.
-Jason.