WiFi connection doesn’t work on my Android device

Here are some things you can try to fix your Wi-Fi connection on your Android device:

Restart your device and your router. This can sometimes fix minor software glitches.
Make sure that your device is in range of your router. The further away you are from your router, the weaker the signal will be.
Check to see if other devices are able to connect to your Wi-Fi network. If other devices are working, then the problem is likely with your device.
Forget the Wi-Fi network and then reconnect to it. To do this, go to Settings > Network & internet > Wi-Fi. Tap and hold the name of the Wi-Fi network that you are having problems with and then tap Forget. Then, tap the network name again and enter the password to reconnect.
Restart your router. To do this, unplug your router from the power outlet for a few seconds and then plug it back in.
Update your router's firmware. Outdated firmware can sometimes cause problems with Wi-Fi connections. To check for firmware updates, log in to your router's web interface and look for a firmware update section.
Change the Wi-Fi channel. Some Wi-Fi channels can become congested, which can lead to connection problems. To change the Wi-Fi channel, log in to your router's web interface and look for a Wi-Fi channel setting.
Reset your router to factory defaults. This should be a last resort, as it will erase all of your custom settings. To reset your router to factory defaults, press the reset button on the back of the router for a few seconds.

Make sure that your device's Wi-Fi is turned on.
Try connecting to a different Wi-Fi network to see if the problem is with your device or with your home Wi-Fi network.
If you are using a VPN, try disabling it to see if that fixes the problem.
If you are using a case on your device, try removing it to see if that fixes the problem.
If you are still having problems, you can try booting your device into Safe Mode to see if the problem is caused by a third-party app.

I hope this helps!