You’re right. It’s better to just not use a password manager and use the same password on every site you go to.

/s if that’s not obvious

I’m in the exact same boat. I have a Jellyfin server configured and ready to go whenever something happens to really piss me off. This nearly was it until I saw that my lifetime Plex pass I bought 10 years ago will make it still be free for my family.

There are password managers you can self host. Bitwarden being one of them. Secure it as much as you want and keep off-site encrypted backups if you’re worried about a single point of failure.

Why is your Roku TV even on the Wi-Fi if you just block its internet?