It is possible either the antenna is defective (they aren’t great on the best of days) or there is a config issue within the GPS. @CommsNetworkingGuy had some luck with a factory reset and could maybe elaborate.
You could try load my GPS pass through sketch in Arduino IDE and then access the GPS with the UBlox UCentre program. This may tell you more about what is going on. However UCentre can take a bit to get your head around.
You also need to install the ESP32 in Boards Manager within the Arduino IDE.