You probably have stock boot and stock recovery on the device (even though you previously attempted to flash lineage recovery), or possibly have a corrupt image.
I would try, in order, flash from fastboot: 1) unofficial lineage (19.1-20220908-UNOFFICIAL) dtb.img, 2) official lineage (19.1-20220918-nightly) dtbo.img, 3) offical lineage (19.1-20220918-nightly) recovery, then fastboot reboot recovery, enable adb, reboot to recovery, format/factory reset, adb sideload.
You can probably substitute 19.1-20220925-nightly for any official files, but I have not tested that build yet.
If you still cannot boot, you likely have a different problem that will require further troubleshooting (verify you are unlocked? check cables, drivers..). As long as you can access fastboot or burn mode, you should be able to flash lineage 19 eventually when newer releases happen. Or you could always flash older dtb and dtbo to boot the stock rom still on your device or install lineage 18.