iPhone 7 WiFi antenna is disconnecting

My Iphone 7 constantly connects and disconnects to the wifi internet, for each 10 seconds connected I am 10 seconds disconnected

(My 4G internet, celular signal to make calls, and my bluetooth are working normally and well)

If I were to replace the wifi antenna I dont understand if I need to replace the “ Top Right Antenna“ or the “Wi-Fi Diversity Antenna” , or both?

Which part needs replacement?