I don’t know what you did, but revert all your changes or restore your last system backup and post an
inxi --admin --verbosity=7 --filter --no-host --width
(Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
Also, please copy-paste that output in-between 3 backticks ``` at the beginning and end of the code/text.
nmcli is the CLI tool of choice to set fixed IP addresses…
