KeePass is really good, but it definitely requires to handle everything outside the password management (like syncronization between devices, TOTP, password quality check, etc.). It is not user friendly at all. Thankfully KeePassDX (on Android, not pc) has a way better built-in experience.
For YouTube, check out newpipe on F-Droid. No ads, you can download content, play videos in background, etc.