Change the Router’s Password
It’s possible that your Wi-Fi password is weaker than you thought. You never know. Maybe a neighbor is using your Wi-Fi. To avoid that from happening, you could try changing your Wi-Fi password every now and then. Try to make it a bit harder by adding letters, numbers, and special characters. Not only will this help you disconnect any devices you’re not currently using—that are still connected to the internet—but it’ll keep the nosy neighbors and unwanted guests away.