<b>An untested backup is not a backup. It's a prayer.</b>

<b>An untested backup is not a backup. It's a prayer.</b>
You have a folder of .sql.gz files going back 14 months. Congrats, you have a museum. You have never once restored a single one, so you have no idea if they're truncated, half-written, or encrypted with a key that retired with your last sysadmin.
A backup you haven't restored is Schrödinger's data: both safe and dead until the day you actually need it, at which point it collapses into dead.
Restore one. This week. To a real environment. Time it.
If you can't tell me your last successful restore date, you don't have backups. Fight me in the comments.