Waited too long OTA updates no longer available. 1.14 FP4

Hi @LegoBrickOnFire, welcome to this forum.

Do you currently run P, Q, R or S android underlayer ?
Do you currently run stable or dev build ?
Does your bootloader locked or unlocked ?

In the worst cases (Q or locked bootloader), you will need to format the /data partition…
and so, loose you installed apps and personnal things to recover a working phone