Port forwarding two routers for two raspberry in local network with switch

I have two raspberry pi 4 connected each to router with DHCP.

Both routers connected each other through switch. And router 1 gives IP to router 2 (lan connected through WAN and receive IP). I reserved IPs that they don’t change.
I have also notebook, connected through switch.

What I need, that from notebook have access to two raspberries, to one port(1880). To raspberry 1 I connecting without problem. But problems coming for connecting to raspberry 2.

I configured router 1 port forwarding 1880 port going to 192.168.1.100. But cannot connect with 192.168.0.115:1880 (router 2 ip address). Also tried 22 port for SHH, but also can’t.

Just one thing is working. When I configured Remote management for router, i can connect 192.168.0.115 to router’s admin page. That’s mean, router2 is connected to network and i have access to it. But can’t use port forwarding for internal raspberry 2.

What I am doing wrong?

Routers model – TP-Link WR840N
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