Hi @kkct ,
Try with this:
Router0
Router(config)# ip route 192.168.2.0 255.255.255.0 10.10.10.2
Router(config)# ip route 192.168.3.0 255.255.255.0 10.10.10.2
Router1
Router(config)# ip route 192.168.1.0 255.255.255.0 10.10.10.1
Also, you must make sure that the PCs have the correct gateway
Regards