Fixing the OpenWRT configuration (2 routers - 3 subnets)

There are two Open WRT routers as on the image: OpenWrt19.07.6-1 and OpenWrt19.07.6-2.
Subnets are: 192.168.76.0/24, 192.168.1.0/24, 192.168.2.0/24
wan interface: 192.168.48.130
ping is working between subnets 192.168.76.0/24 and 192.168.1.0, as well as I can reach the internet from both subnets.
the issue:
I can't ping from 192.168.1.0/24 to 192.168.2.0/24,
I can't ping from 192.168.2.0/24 to 192.168.1.0/24
I can't ping from 192.168.2.0/24 to 192.168.76.0/24
I can't ping from 192.168.76.0/24 5o 192.168.2.0/24
as well as from 192. 168.2.0/24 to the internet (wan: 192.168.48.130)

Need someone to check the router's configuration.