That’s weird, I have never experienced any crash/problems with the app.
What i was saying with load times is that sometimes instance gets ratelimited by YT but with newpipe you are not using proxy, so probably not going to get rate limited that fast.
If you got the option buy ikea smart bulb, they work offline with a IR remote, or with zigbee, they have no bullshit software that you need to install to use them.
Use strong master password. Use a 2fa / passkey. Use reputable secure one like bitwarden or better a offline one like keepassXC.
Password managers are great tools that if used correctly can be very good but when you use them incorrectly it can go very wrong.
The main thing that they solve is week passwords, and passwords that are reused.