The WiFi Says I'm Connected But Browser Says I'm Not

Hello! I have Alcatel Pop 4 + that has WiFi problems! It's able to connect and authenticate successfully. I'll have internet for 30 seconds and then Google Chrome will say that I'm no longer connected despite the fact that I am. All other devices on the same network are able to browse the internet without any problems so I suspect that the problem lies with my phone. Is there anything I can do including replacing parts or repairing it myself?