So did I, and a lot of people I grew up with. Cartoon Network, Discovery Channel and later on, the Internet.
My teenage kids are fluent as well, and that’s almost all of it from watching media. First cartoons and movies (I keep all my streaming services in the native language, and most of them are in English), and now… YouTube.
My backup concept is on the to-do list. Been there for a couple years. I do have triple pihole/caddy/haproxy/redis for high availability on a triple node proxmox cluster! necessary? no. cool, though? heck yeah! friends and family impressed? uhm… what was the question?