Can I use Tor and a VPN at the same time?

Yes! It will have a negative impact on your internet speed, but it's certainly possible.

The easiest way is to connect your device to a VPN and launch the Tor browser. This will route outgoing traffic through the VPN first and then through the Tor network.

This setup will make it more difficult for third parties to track you. If your internet service provider frowns upon Tor connections, then the VPN will hide the fact that you're using Tor.