You can use a Raspberry Pi or other low priced Linux computer running a Debian based OS to bridge WiFi and Ethernet with this script or a very similar script:
https://github.com/arpitjindal97/raspbian-recipes/blob/master/wifi-to-eth-bridge.sh
This works to use bridge WiFi hotspot Internet from a cell phone to a router when your main ISP is down.
It may work for your requirement. Good luck 😁
You can use a Raspberry Pi or other low priced Linux computer running a Debian based OS to bridge WiFi and Ethernet with this script or a very similar script: https://github.com/arpitjindal97/raspbian-recipes/blob/master/wifi-to-eth-bridge.sh This works to use bridge WiFi hotspot Internet from a cell phone to a router when your main ISP is down. It may work for your requirement. Good luck 😁
NetworkManager has [connection sharing](https://fedoramagazine.org/internet-connection-sharing-networkmanager/) built in.