When I go to this page, https://wiki.lineageos.org/devices/ for a lot of the devices the web page says that the device is not currently supported. Does that mean that you cannot put the custom rom of Android 9.0 on it? Can it still get security updates for whatever rom was developed for the device. For example, if a rom based on Android 8.0 was developed for it, will it still get the Android 8.0 security updates?
I am new to custom roms, so sorry if I am asking in the wrong place, or anything.