Neither closed or open software is safer than the other in my opinion. If someone wants to find a vulnerability they will find a vulnerability. The only advantage open source maybe has that it’s harder to hide vulnerabilities for years and it’s more obvious if they don’t fix it. But personally I wouldn’t use open source just for safety reasons.

Even if you don’t buy a lottery ticket an infinite of you wins

I just turned off NSFW in settings. It doesn’t really remove all nsfw posts but it hides them so you have to click a button to show the nsfw post. Not the best solution overall but the best we have right now

Edit: the setting is called Hide NSFW

Maybe check if your phone is stopping apps that are in the background. If I’m not mistaken it’s an Android feature and most of the time you can disable it in settings per app. On my Huawei phone it’s Settings > Apps > the app > power usage > launch settings.

Started with Bitwarden years ago, then I used 1password for a few months and now I’m using Keepassxc (Keepass2Android on my phone).

And I recommend everyone to use one. Not necessarily Keepass if they are not very tech savy (database synchronization can be a little bit tricky but not hard). Bitwarden was good too but Keepassxc supports adding ssh keys which is a big plus for me.