Slow wifi seems to be a rising issue in my life. Usually slow wifi is something you should be able to fix yourself but sometimes you have to get extra help. One issue that could be going on with slow wifi is that multiple users could be using the internet which could make it slow. Also something else that could happen is your internet provider could be having problem which is something that would be out of your hands to fix. Something that could improve your internets speed is moving closer to the router. Another thing that you could do is reboot your device to try to troubleshoot the problem.