Well, if you want to be connected to the isp..
and also connect to an esp hosted access point..
then yes, that’s 2 networks and quite possible..
did you try 192.168.1.1??
it should configure..
when your system get’s an ip from the esp something like 192.168.1.2 and then your system will know that anything in 192.168.1.xxx range send out this interface..
now you could have the esp connect to you isp router then using the 192.168.4.xxx range is valid..
~q