WiFi near side of house

I have both the ring doorbell and the spotlight security cam. I installed the security cam on the side of my house and it could not connect to WiFi. I tested the WiFi and it is weak immediately next to the house. If I move the test out just a few inches it has a very strong connection. I believe the siding is blocking the WiFi immediately next To the house. I bought the ring chime WiFi extender and have it on the opposite of of the wall inside and that helped somewhat so I can connect, but the WiFi is still hit or miss. Any suggestions on how to improve poor WiFi immediately next to the siding would be appreciated.