How to maintain the gateway IP of the Android access point?

I realized that the IP address of the access point router changes every time (Android 9). I have to change the routing table of my device connected to the AP every time How to freeze the IP of the AP gateway ? Thx EDIT: I use my android phone as hotspot. I connect to it from my PC equipped with a wifi key. From my PC, my routing table for this network interface is: Net. Dest Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.43.166 192.168.43.102 600 192.168.43.102: Is the IP address of the wifi key of the PC connected to my Android hotspot. 192.168.43.166: The gateway changes, it's never the same with each new connection to the Android Hotspot